Bayer Leverkusen became the first team in Bundesliga history to complete a full season unbeaten after beating Augsburg 2-1 on the final day.

Xabi Alonso's treble-chasing team also stretched their European record unbeaten run across all competitions this season to 51 matches.

Victor Boniface intercepted a ball from Augsburg keeper Tomas Koubek to tap in for the lead in the 12th minute before Robert Andrich, part of Germany's Euro 2024 preliminary squad, doubled the advantage from close range.

Augsburg cut the deficit when Mert Komur scored just after the hour.

Leverkusen captain Lukas Hradecky made a smart stop to maintain Leverkusen's clean sheet, as the Bundesliga champions held on to make history.

Alonso's team, who face Atalanta in the Europa League final on Wednesday and also take on Kaiserslautern in the DFB-Pokal final on May 25, finished on 90 points, 17 ahead of second-placed Stuttgart and 18 ahead of Bayern Munich, who lost 4-2 at Hoffenheim.

Data Debrief: Leverkusen's remarkable run rolls on

What an incredible season it has been for Leverkusen, and Alonso's men are now just two wins away from unprecedented success.

Leverkusen have become only the second team in Bundesliga history to not lose a single point from winning positions in a season, matching a feat Bayern managed in 2011-12. 

They have won 45 points (W13 D3) in their 17 home games in the Bundesliga this season and have remained unbeaten at home for only the second time, after 1999-2000. 

Leverkusen are the second club in league history to reach the 90-point mark, following Bayern (90 points in 2013-14 and 91 points in 2012-13).

Bayer Leverkusen are ready to become the first team in Bundesliga history to go an entire season unbeaten, coach Xabi Alonso said after Sunday's 5-0 demolition of Bochum.

Treble-chasing Leverkusen cruised past Bochum, who had Felix Passlack sent off in the 15th minute, to stretch their remarkable unbeaten run across all competitions this season to 50 consecutive matches.

On Thursday, Alonso's team surpassed Benfica's long-standing European unbeaten record set from 1963 to 1965 with a 2-2 draw against Roma that sent them through to the Europa League final.

Sunday's win over Bochum also meant they became only the third team in Bundesliga history to remain unbeaten in every away match of a season.

"After that red card it was a completely different game for us," Alonso told a press conference.

"I am very satisfied with the result. It was important for us. Now we have a super goal on Saturday to win the title without any defeat. That has never happened before."

Leverkusen, who face Atalanta in the Europa League showpiece match and take on Kaiserslautern in the DFB-Pokal final later in May, entertain Augsburg at home in Saturday's Bundesliga finale where they will also receive their first-ever league trophy.

"To receive the title in Leverkusen will be very special," said Alonso. "The players have been focused the entire season so for them it will be very special. I am proud of them."

Bayer Leverkusen coach Xabi Alonso said his team deserve to win all three trophies available to them this season after they qualified for the Europa League final by seeing off Roma on Thursday.

Leverkusen, who have already wrapped up the Bundesliga title and will contest the DFB-Pokal final on May 25, stretched their unbeaten run through all competitions this season to 49 matches, surpassing Benfica's long-standing European top-tier record set between 1963 and 1965.

Once again, they did it the hard way after two Leandro Paredes penalties wiped out their first-leg advantage, with a Gianluca Mancini own goal and a stoppage-time strike from Josip Stanisic completing a dramatic comeback.

Following their 4-2 aggregate victory, Roma will face Atalanta in the May 22 final in Dublin, after La Dea overcame Marseille 4-1 on aggregate in the other semi-final.

"We'll play two finals in a week as a result," Alonso said. "We showed great character today after their second goal. 

"I looked my players in the eye afterwards and saw that they wanted more.

"We still have the chance to win three titles, and my boys deserve all three titles."

Despite going 3-2 up on aggregate when Mancini put through his own net, Leverkusen refused to sit back as they looked to preserve their unbeaten record, which they did through Stanisic's 97th-minute strike.

Asked whether that goal was one of the biggest moments of his career, the Bayern Munich loanee said: "Definitely one of them. 

"We knew what was at stake, we really wanted to get to the final and I think you could see that over 90 minutes today.

"I don't think we would have cared in the end if we lost and still progressed because we really wanted to get to the final, but it's even nicer this way."

For Roma, the chance to reach a second straight Europa League final after last season's defeat by Sevilla on penalties slipped away in the dying minutes of the match.

"When you manage to get it back from 2-0 down and go close to the miracle, knowing nobody has ever beaten them this season, it hurts to see us concede a goal like that. It hurts," Roma boss Daniele De Rossi told Sky Sports Italia.

Bayer Leverkusen reached the Europa League final and stretched their remarkable unbeaten run to 49 games on Thursday, Josip Stanisic scoring seven minutes into stoppage time in a dramatic 2-2 draw with Roma.

Having won last week's first leg 2-0 in Italy, Leverkusen were strong favourites to advance to this month's final in Dublin, though two Leandro Paredes penalties left them facing up to the prospect of extra time.

Paredes halved Leverkusen's aggregate lead on the stroke of half-time after Jonathan Tah fouled Sardar Azmoun, then repeated the trick following a bizarre handball from Adam Hlozek shortly after the hour mark.

However, Roma's hearts were broken as goalkeeper Mile Svilar – who was otherwise outstanding – failed to claim a routine corner and it bounced in off the unfortunate Gianluca Mancini with eight minutes of the 90 remaining. 

Rather than sitting back at 2-1 up in the tie, Leverkusen chased a leveller in order to preserve their unbeaten record across all competitions this season.

It was yet another last-gasp effort that kept that record intact, with Stanisic firing into the bottom-left corner after being played through by Granit Xhaka.

Xabi Alonso's team are now unbeaten in 49 games in all competitions, breaking Benfica's previous European top-tier record of 48 matches, set between 1963 and 1965.

Leverkusen will face another Italian side in the showpiece game, after Atalanta crushed Marseille 3-0 in Bergamo to seal a 4-1 aggregate win in the other semi-final.

In-form striker Gianluca Scamacca had already rattled the crossbar when La Dea took the lead, with Ademola Lookman's strike deflecting in off the unfortunate Samuel Gigot. 

Lookman then turned provider as Atalanta stretched their advantage seven minutes after the break, teeing up Matteo Ruggeri for a rasping finish into the top-right corner.

Gian Piero Gasperini's men were able to add some gloss to the scoreline at the death, with El Bilal Toure's pinpoint finish giving Pau Lopez no chance to round off a dominant win. 

Bayer Leverkusen will use last campaign's Europa League loss against Roma as motivation to get the job done this time, so says Xabi Alonso.

Leverkusen were knocked out by Roma after a goalless draw in the second leg of the Europa League semis last season, losing the tie 1-0 on aggregate.

But a few things have changed since then with Alonso's side, who are now on an extraordinary 48-match unbeaten run this campaign, ending Bayern Munich's 11-year stranglehold on the Bundesliga title to secure their first trophy since 1993.

They are also a step closer to a treble, having beaten Roma 2-0 away in the first leg last week and reaching the DFB-Cup final against Kaiserslautern.

"We haven't forget (forgotten) last season, we felt it. We need to use this energy and hopeful we can celebrate at the end. We will put all of our focus on the full 90 minutes. We want to deserve our win and make the final in Dublin," Alonso told reporters.

The Spaniard, however, said Leverkusen will have to be on their toes despite their advantage as he believes Roma will continue to be dangerous opponents under manager Daniele De Rossi, who replaced Jose Mourinho in January.

"A second leg is always a dangerous situation no matter the result before," Alonso said.

"We are preparing to play well with good motivation and at our own game. We want to be aggressive, control and defend well as a team.

"We are expecting Roma to come with the hope of qualifying."

Xabi Alonso believes his Bayer Leverkusen side can still improve after they extended their unbeaten run to 48 matches across all competitions on Sunday, equalling Benfica's European record.

Champions Leverkusen thrashed Eintracht Frankfurt 5-1 in the Bundesliga to match Benfica's 48-game unbeaten run between 1963 and 1965 – a record across all competitions in Europe.

Alonso, however, still feels there is more to come.

"Our level, our consistency throughout the season is great. But we are always moving forward. We are always concentrating on the work and improving," he said.

Leverkusen, who are edging closer to an unbeaten season across all competitions, have two league matches remaining and are also set to face Kaiserslautern in the DFB-Pokal final on May 25.

They also hold a 2-0 lead over Roma at the halfway stage of their Europa League semi-final tie, with Thursday's second leg offering them the chance to surpass Benfica's record on home soil.

"It's a big challenge, we have two [Bundesliga] games left, it will be the perfect run. We will certainly try," Alonso said.

"We still have games to play to achieve our big goals in all competitions. The next game is important for us, the second leg of the Europa League semi-final: a chance to reach the final.

"In football it's sometimes difficult to stop. You have to prepare for the next game. The next game is a big game for us. Hopefully we have the chance to be in a European final again."

Leverkusen will play Bochum and Augsburg in their final two Bundesliga games. 

Should they progress to the Europa League final, they will then face either Atalanta or Marseille in Dublin on May 22, three days before the DFB-Pokal showpiece game.

Bayer Leverkusen continue to edge towards a remarkable unbeaten season and Xabi Alonso acknowledged every club wants to put that run to an end.

The newly-crowned Bundesliga champions moved a step closer to a treble after beating Roma 2-0 away in their Europa League semi-final first leg on Thursday.

Alonso's side have also reached the DFB-Pokal final against Kaiserslautern as their extraordinary 47-game unbeaten run continues across all competitions.

Leverkusen, who ended Bayern Munich's 11-year stranglehold on the Bundesliga title to secure their first trophy since 1993, travel to sixth-placed Eintracht Frankfurt on Sunday.

"We want to stay unbeaten and we know every week it gets tougher. Everyone wants to beat us," Alonso told reporters.

"It hasn't been easy in Frankfurt in recent years, they've always a tough opponent with a flexible system of play. We don't have much time to prepare."

The 42-year-old Spaniard will be watching the Frankfurt game from the stands after receiving his fourth yellow card of the season during his side's 2-2 home draw with Stuttgart last week.

"You can see the game better from the stands and I can communicate with the bench," he said.

"I will miss the direct contact with the team during the game but the players are intelligent enough to decide situations individually on the pitch."

Bayer Leverkusen put one foot in the Europa League final as Florian Wirtz and Robert Andrich scored in Thursday's 2-0 semi-final first-leg win over Roma at the Stadio Olimpico.

Roma were masters of their own downfall as Wirtz opened the scoring after 28 minutes, Rick Karsdorp's horrible error allowing Alex Grimaldo to race into the area and tee up Wirtz to finish into an unguarded net.

Though Daniele De Rossi's hosts improved after the break, Andrich added a spectacular second with 73 minutes on the clock, the midfielder giving Mile Svilar no chance as he side-footed into the top-left corner from 25 yards out.

Roma should have pulled one back four minutes into stoppage time, but Tammy Abraham could only nod over from inside the six-yard box after a goalmouth scramble, and they now have it all to do in next week's second leg.

Leverkusen's unbeaten run for 2023-24 stands at 47 games across all competitions (39 wins, eight draws), and they are now overwhelming favourites to stamp their ticket to the final in Dublin.

The other semi-final tie remains in the balance at the halfway stage, with Atalanta being pegged back in a 1-1 draw with Marseille at the Stade Velodrome.

Having scored twice in La Dea's memorable win at Anfield in the last round, Gianluca Scamacca took in Teun Koopmeiners' pass before finishing low across goal 11 minutes in, but Gian Piero Gasperini's team couldn't hold on.

Chancel Mbemba was the unlikely goalscorer for Marseille, stepping out of defence to clip a 25-yard effort against the far post and in after 20 minutes.

Neither side could find a winner from there, meaning it's all to play for ahead of next week's return fixture at the Gewiss Stadium in Bergamo.  

Xabi Alonso is capable of guiding 'exceptional' Bayer Leverkusen through the remainder of the season unbeaten en route to winning a historic treble.

That is according to former Leverkusen defender Carsten Ramelow, who told Stats Perform that Alonso is undoubtedly the key to their success.

Bayer were crowned champions of Germany at the weekend for the first time in their 120-year history with five Bundesliga games still to play.

Not only have Alonso's side dodged defeat in the league, they have also not lost any of their 14 DFB-Pokal or Europa League matches.

With a 2-0 lead heading into their Europa quarter-final second leg against West Ham, and with Kaiserslautern awaiting them in the domestic cup final, the treble is very much on.

"The season they have played is phenomenal," Ramelow said. "Their streak is sensational and it looks like they will do this until the end. 

"Every team has a bit of a lapse, but Leverkusen have been exceptional in every competition. They can still win everything. Things are looking really good."

Former Real Sociedad B coach Alonso took over Leverkusen in October 2022 with the club second from bottom in the Bundesliga.

The Spaniard guided them to sixth last season and has taken them to the title in his first full campaign at BayArena, ending Bayern's run of 11 successive crowns.

Ramelow, who spent 13 years as a Leverkusen player, has hailed the part Alonso has played in the greatest season in the club's history.

"I heard a lot of people talk about him how much of a worker he is, and that he is also very companionable," Ramelow said. "The whole package is in perfect harmony.

"I think that the coach has big merit in this. When he arrived in Leverkusen, he was facing a few problems, which is normal. 

"I think you have to give managers some time in this day and age. That's also what they did with him. He explained his philosophy and idea very well to the team. 

"The boys execute that really well. And I also think he’s a great guy who acts as an example for his players – both on and off the pitch."

Florian Wirtz should follow Xabi Alonso's lead and reject interest from Europe's top clubs to stay at Bayer Leverkusen beyond this season, says former Germany international Carsten Ramelow.

Wirtz has been one of the standout performers in a remarkable campaign for Leverkusen, who are just one win away from clinching their first Bundesliga title.

The attacking midfielder has 18 goal involvements in 28 league outings this term (eight goals, 10 assists), with his latest goal coming from the penalty spot in Saturday's win over Union Berlin.  

Among all Bundesliga players, Wirtz ranks third for successful dribbles (77), fifth for chances created (70) and fourth for expected assists (9.23 xA) this season.

His performances have won him plenty of admirers, with Liverpool, Manchester United, Manchester City and Real Madrid among those credited with an interest in the 20-year-old.

However, after seeing head coach Alonso reaffirm his commitment to Leverkusen, Ramelow, who made over 400 appearances for Die Werkself between 1995 and 2008, thinks Wirtz should follow suit. 

"For Leverkusen, he is indispensable," the 2002 World Cup finalist told Stats Perform. "The same goes for the national team, where he has found a good role. 

"There's a lot of speculation. When you're in great form, the big teams come knocking. Leverkusen hope he will continue with them for a while and move on after that. 

"In my opinion, it would be good for his development to stay in Leverkusen, because you can see if young players leave too early, it is not always good."

With Alonso refusing to jump ship, Ramelow feels Leverkusen still have plenty to offer Wirtz, saying: "To show consistent performances, you have to be where you feel happy, and I think Leverkusen is a good place currently. 

"They are so consistent. They have a lot of confidence and also a pinch of luck in the final moments to win games. That's really good. You have to look at the collective, the coach and his staff.

"But of course, Wirtz is a very young player who showed his talent many times over the last few years. He has made really good development and has lots more to come.

"Why not continue on that path for another one, two, maybe even three years and make the next step afterwards? This is what I think is the right way, but we will see what decision Wirtz takes."

Remarkably, Leverkusen are yet to lose a game in any competition this season. They have just six further games to navigate in the Bundesliga, while they will face second tier Kaiserslautern in May's DFB-Pokal final and are among the favourites to win the Europa League.

 As Leverkusen look to banish the ghosts of 2001-02 – when they finished as runners up in the Bundesliga, DFB-Pokal and Champions League – Ramelow says all the credit lies with Alonso.

"When he arrived in Leverkusen, he was facing a few problems, which is normal. I think you have to give managers some time in this day and age," Ramelow said.

"That is what they did with him. He explained his philosophy and ideas very well to the team. The boys execute that really well. 

"The whole package is in perfect harmony. The season they have played is phenomenal. Their streak is sensational and it looks like they will do this until the end. 

"Every team has a bit of a lapse every season, but Leverkusen have been exceptional across all competitions. They can still win everything. Things are looking really good."

Xabi Alonso said it was an "incredible" thrill to beat Bayern Munich as the Bayer Leverkusen boss enhanced his growing reputation with Sunday's victory.

Former Bayern midfielder Alonso, who won three Bundesliga titles in a three-year spell with the Bavarians, has turned his hand to coaching since 2017 and dealt his old team a huge blow to their hopes of an 11th successive championship.

Alonso took over at Leverkusen in October, shortly after a 4-0 defeat away to Bayern, and has lifted the team from second-bottom at the time of his arrival to eighth position.

They are just three points off sixth after a 2-1 win over Bayern, who trail Bundesliga leaders Borussia Dortmund by one point with nine rounds of games remaining.

Victory came courtesy of two Exequiel Palacios penalties, after Bayern took the lead through Joshua Kimmich.

Bizarrely, Amine Adli was booked for diving initially in both penalty incidents, before the bookings were rescinded and spot-kicks were awarded.

"The feeling after the game is incredible," said Alonso, quoted on the Bundesliga website.

"We won against one of the best teams in Europe."

His team are also through to the Europa League quarter-finals, with Alonso's first season proving a roaring success so far. They won away to Ferencvaros on Thursday, and following that up by beating the 10-in-a-row German champions was no mean feat.

"I'm very happy and proud that we were able to continue the performance from the Europa League," Alonso said. "It was very important that we equalised. We played with a lot of energy and it wasn't easy."

Referee Tobias Stieler spoke about the penalty incidents and pointed out the value of VAR, thanking the television match official.

"He was my lifesaver – and also the lifesaver for the game," Stieler told DAZN. "In the end, both teams were happy because the right decision was made."

He was glad Adli was not affronted by the decisions that initially went against him.

"The only thing left to do is take it with humour," Stieler said. "We hugged each other during the game and also after the game. Now he promised me the shirt."

Xabi Alonso saluted the development of former team-mate Joshua Kimmich as the Bayer Leverkusen boss prepares for a reunion with Bundesliga leaders Bayern Munich on Sunday.

Almost six years have passed since Alonso retired as a player, bringing an illustrious on-field career to a close at Bayern, where he won three consecutive league titles.

Kimmich was making his way in the game during Alonso's three-season spell at the club, arriving from Stuttgart and becoming increasingly important to Bayern but still having plenty to improve in his game.

Now 28, Kimmich has matured into one of Europe's most complete midfielders, which is what Alonso expected he might become.

Asked whether he saw similarities between himself and Kimmich, Alonso said: "In terms of position, yes. When I saw Joshua for the first time, I knew he had a great future just based on his style of play, his personality and his character.

"He has developed really well. His passes are special, the way he distributes the ball as well as his vision on the pitch. I like the way he plays. He’s a super player in the way he presents himself."

There have been few playmakers as complete as Alonso in the past 20 years. Kimmich is not far off, and the Germany international has time in which to rival the Spaniard's trophy haul, which includes two Champions Leagues, two European Championships and a World Cup.

On Sunday, Alonso's Leverkusen will confront a Bayern side that should feature Kimmich. After a slow start under predecessor Gerardo Seoane, Leverkusen have shown huge improvement under Alonso, who is almost six months into his first top-flight coaching job.

Thomas Muller, Kingsley Coman and Kimmich were team-mates of Alonso, but the Leverkusen boss, a former Real Madrid and Liverpool star, does not see any obvious advantage from their past acquaintance.

"I do know them, but that doesn't make it easier," Alonso said, quoted on his club's website. "Our aim is to stop their players and make the game as difficult as possible for our opponents."

He will offer a few pointers, all the same.

"Yes, of course I can do that," Alonso said, "but it's always easier to say these things than to do them."

Xabi Alonso and Bayern Munich were once a perfect match, and few would be surprised should they couple up again somewhere down the line.

Yet Alonso could put a dent in Bayern's Bundesliga title prospects on Sunday, when his Bayer Leverkusen side host the 10-in-a-row champions at BayArena.

Six years have passed since Alonso announced he would be retiring as a player at the end of the 2016-17 season, sparking an outpouring of tributes to one of the great midfield artists of his era.

That news, revealed in March 2017, raised the question of 'what next?' for a man who as a player won a World Cup and two European Championships with Spain, Champions League titles with Liverpool and Real Madrid, and would end up with a hat-trick of Bundesliga medals at Bayern.

Suave, sophisticated and wealthy, with a happy family life, would he even need football again?

Only on his terms. What do you give the man who has everything? You give him control.

Stats Perform has looked at the coaching career so far of the 41-year-old Alonso, who might be a Bayern coach of the future but for now is plotting their downfall.

Softly, softly approach pays off

Like his former Liverpool team-mate Steven Gerrard, Alonso began his coaching education out of the spotlight, at the clubs he knew best.

Where Gerrard started off learning the coaching ropes at Liverpool's academy, Alonso accepted a role with Madrid's Under-14 team in 2018, while polishing off his coaching qualifications.

On June 1, 2019, Alonso stepped away from Madrid to become boss of Real Sociedad B, leading the Basques to promotion to Spain's Segunda Division, their first appearance at that level in 59 years.

Alonso spent three years with that second-string unit, and although they were relegated before he left, La Real noted his "brilliant" spell at the helm in a farewell note at the end of last season.

The club said Alonso had succeeded in "enriching, thanks to his knowledge and involvement, the training and progress of the players of our subsidiary", and pointed to his players successfully progressing through to the first team.

The future was uncertain for Alonso at that point, but only in the sense he would soon have his pick of clubs and would need to choose his pathway.

Bundesliga beckons again

Leverkusen were crushed 4-0 at Bayern in late September of last year, and it proved to be Gerardo Seoane's final Bundesliga game in charge of Die Werkself. They began the season by taking five points from eight league games and were in crisis.

Seoane was sacked and Alonso placed at the helm, telling reporters what had attracted him to his first top-flight coaching role.

He reasoned there was "always a risk" in taking on a new challenge. "But you have to always improve and take steps forward," Alonso added. "I firmly believe that it will work out here and I am fully motivated."

He had previously been presented with "the chance to coach good teams" but waited for the right opportunity, he said, and now he "realised that I'm ready".

Explaining what he would look for from his new team, Alonso urged them to buy into his methods.

"As a former midfielder, I like control," he said.

As graceful as he was in central midfield, Alonso was also a serial winner, and tellingly he had played under some of the great coaches: five years with Rafael Benitez at Liverpool, five years split between Manuel Pellegrini, Jose Mourinho and Carlo Ancelotti at Madrid, and two years with Pep Guardiola at Bayern before one last campaign under Ancelotti with the Bavarians.

What an education.

Leverkusen sporting director Simon Rolfes described Alonso as a player who was "an absolute world-class professional for many years, an intelligent strategist and extremely successful in three of the most demanding European leagues".

The message was clear: Leverkusen expected Alonso the coach to match up to Alonso the player. They were confident he was a world-class acquisition.

So far, so good

Guardiola sang the praises of Alonso in the week of his appointment by Leverkusen, saying he was a man who, in terms of understanding the game, "reads perfectly".

Leverkusen sat 17th in the 18-team Bundesliga, far from where they expected to be. They have finished in the top six in each of the last five seasons, and 12 of the last 13 campaigns, so the club's standards are high and were not being met.

After that risible start (W1 D2 L5) under Seoane, Bundesliga results have significantly picked up, with Alonso's haul of 29 points from 16 games (W9 D2 L5) having only been bettered by three teams (Bayern Munich, Borussia Dortmund, RB Leipzig) during the course of his reign, heading into this weekend's round of games.

Control, that watchword, is slowly coming. Their possession has inched up from 51.3 per cent for the initial eight games under Seoane to 53.5 per cent over the games bossed by Alonso. Bayern lead the way in possession with 63 per cent, followed by Dortmund (58 per cent). Leverkusen were ninth on the list under Alonso's predecessor but are fifth during his tenure.

Making changes and imposing new ideas in mid-season is far from easy, but Alonso is giving it a good crack.

Leverkusen ranked a distant fourth in open play sequences of 10-plus passes during the opening eight rounds of Bundesliga games, with 68 such sequences compared to leaders Bayern's 142. Under Alonso, Leverkusen have logged 204 such sequences of 10-plus passes in open play possession, which puts them third on the list for the duration of his time in charge.

Having had less than half as many possessional sequences as Bayern in the opening eight games, Leverkusen are now much more comparable, with Bayern leading the way with 274 and Leipzig second with 252.

Alonso's team have gone from an average of 3.31 passes per sequence to 3.77, a marked shift. Long passing success still leaves a little to be desired, with a gradual improvement from 44 to 46 per cent during Alonso's reign still leaving them behind Dortmund (60 per cent) and Bayern (59 per cent).

If only Alonso could be the one spraying such passes, Leverkusen would soon jump up that list. Like fellow great playmakers of years gone by, such as Andrea Pirlo and Glenn Hoddle, it is likely the case that Alonso has wowed players on the training pitch with his passing range, but he would give all that up now to have Leverkusen competing at the top of the Bundesliga.

Bring on Bayern

As it is, Leverkusen are not yet jostling near the summit. That slow start has meant even the major improvement under Alonso has only seen them rise to ninth spot, six points behind sixth-placed Eintracht Frankfurt.

They might still bridge that gap and snatch a European place, but they need to be winning games, so the Bayern game is huge for them, just as it is for Julian Nagelsmann's visitors in their title battle with Dortmund.

Alonso, quoted in the German press after Thursday's Europa League win against Ferencvaros, said there was "no room for emotions" heading into the reunion with his old club.

"I had a great experience at Bayern Munich; I have fond memories of those three years," Alonso said. "Playing against them as a coach for the first time will be nice – and hopefully with a smile for me after the final whistle."

Bayer Leverkusen head coach Xabi Alonso has hailed his side for an "important" victory against Union Berlin on Sunday, after smashing five past Union Berlin.

The Spaniard's side faced a tough test against Union at BayArena, with the visitors knowing a victory would see them reclaim top spot in the Bundesliga ahead of Bayern Munich.

After a goalless first half, Robert Andrich broke the deadlock a minute after the restart to spark a frantic second period, with a brace from Moussa Diaby followed by efforts from Adam Hlozek and Mitchel Bakker.

The win was the joint-highest win for a Bundesliga side against a league leader this millennium, equalling the score achieved by Bayern against Borussia Dortmund in April 2019.

Crucially for the hosts, it also brought an end to a six-match winless streak across all competitions and marked only the third league win for Leverkusen this season, leading Alonso to praise his side's performance.

"The first half was very close, neither side had many chances and it wasn't easy to attack. Union are standing so high in the table for a reason," he said in the post-match press conference.

"In the second half we wanted to stay focused. We had more spaces, our fast players could run deep and were very good at finishing. We are very happy today.

"Today was important. We want to continue in the same way. We always need that mentality to attack and score goals, to stay hungry.

"The 2-0 made the big difference. We defended going forward, the pressure from Jeremie Frimpong was good. That's the mentality we want to have."

Alonso's side now have two Bundesliga matches against Koln and Stuttgart before the World Cup in Qatar, with the league campaign set to resume on January 22.

Xabi Alonso refused to be downbeat after losing his first Champions League game as Bayer Leverkusen head coach, describing Wednesday's 3-0 reverse to Porto as a "lesson".

Alonso led Leverkusen to a 4-0 Bundesliga win over Schalke in his first match in charge on Saturday, but endured a more chastening experience against the Portuguese outfit.

It was a tale of three penalties at the BayArena, as Porto's Mehdi Taremi added to Galeno's opener with two second-half spot-kicks after visiting goalkeeper Diogo Costa denied Karem Demirbay from 12 yards.

Leverkusen have now failed to score any of their last three Champions League penalties, two of which have come against Porto this season (also Patrik Schick on October 4).

Despite the result, the Bundesliga outfit managed 64 per cent possession and 17 attempts in a front-foot display, leaving Alonso to describe the defeat as unjust. 

"We have to analyse the game, come back tomorrow and move on. Today there is pain, but that's football. Today is a lesson for us," he told UEFA.com.

"We could see today that the small mistakes can be fatal in the Champions League. It's hard for me to talk about the result because I think we didn't deserve it."

The former Spain midfielder became the seventh different Leverkusen coach to lose his first Champions League match in charge, but the first to do so by a three-goal margin.

Goalkeeper Lukas Hradecky also thought Leverkusen were hard done by, adding: "It was an unlucky game. It started in a bad way for us and ended in a bad way. 

"Shortly after the break we lost the second goal. Small details were decisive. At this point we have to work hard for success. It's a hard time for our club, but we will work on it."

Leverkusen remain bottom of Group B following their third defeat in four Champions League games this campaign, three points adrift of second-placed Porto.