Robert Lewandowski equalled Gerd Muller's record of 40 Bundesliga goals in a single season as Bayern Munich were held to a 2-2 draw by a determined Freiburg on Saturday.

With a ninth-straight league title already sewn up, the focus for Bayern was all about Lewandowski's pursuit of a notable milestone that was set back in the 1971-72 season.

Lewandowski had closed in on the magical number with a hat-trick against Borussia Monchengladbach last time out, helping Hansi Flick's side celebrate being crowned champions in style with a 6-0 win at the Allianz Arena.

The Poland international matched the legendary Muller's haul thanks to a first-half penalty awarded following the involvement of the video assistant referee.

On-field official Florian Badstubner deemed Lukas Kubler had pulled down Thomas Muller at a corner after receiving a recommendation to review the incident, allowing Bayern's number nine to reach 40 from the spot.

The scorer received a guard of honour from Bayern team-mates and staff next to the visiting dugout in the immediate aftermath, though he failed to take two glorious chances late in proceedings that would have seen him move clear in the history books.

Less than three minutes after conceding the opener, Freiburg capitalised on a set-piece situation to draw level. Vincenzo Grifo's corner into the near post was met by Manuel Gulde, who beat Niklas Sule to the ball and flicked a header beyond Alexander Nubel – handed a first league start as Manuel Neuer watched on from the bench.

While Serge Gnabry had a tap-in finish ruled out for offside early in the second half, Bayern went back in front in the 53rd minute when Muller's volley across the face of the box was finished off by a sliding Leroy Sane.

However - after Mark Flekken had denied Lewandowski, who also scuffed another opportunity at to the goalkeeper - Freiburg captain Christian Gunter fired in a deserved equaliser to earn his side a point.

Hertha Berlin have requested three matches be postponed due to being forced into 14-day quarantine as a result of COVID-19 cases within the Bundesliga club.

Hertha have asked to delay scheduled fixtures against Mainz (April 18), Frieburg (April 21) and Schalke (April 24) after left-back Marvin Plattenhardt tested positive for coronavirus on Thursday. 

Head coach Pal Dardai, assistant coach Admir Hamzagic and striker Dodi Lukebakio had positive tests earlier in the day, prompting the German club to implement the two-week quarantine. 

Hertha initially had planned to play their matches during that period but the additional positive test to Plattenhardt prompted the plea to push them back.

"Due to the cases that have occurred, we are now forced to a 14-day quarantine at home," said sporting director Arne Friedrich, who took charge of training on Thursday with Dardai out.

"From a health point of view, this is absolutely the right step. because we now have to play six Bundesliga games by the end of the season on May 22, 2021 in the fight to stay relegated in May. 

"During the quarantine at home, the team will keep fit with virtual training units under the guidance of the coaching team. 

"We accept the situation despite the difficult circumstances and will throw everything in our power for a successful season finale into the balance."

There was no immediate response from the German Football League (DFL), which had announced new dates for several 2.Bundesliga matches that had been postponed due to coronavirus cases. 

Hertha sit just outside the relegation play-off place on goal difference ahead of fellow strugglers Arminia Bielefeld, while the capital club are three points clear of the automatic relegation positions with six games remaining.

Eintracht Frankfurt head coach Adi Hutter hailed the "greatness" of Luka Jovic following his stunning start to life back in the Bundesliga.

Jovic scored two goals in his return for Eintracht last week after re-joining the German club on loan until the end of the season, having endured a difficult period at LaLiga champions Real Madrid.

The Serbia international only scored twice in 32 appearances under Madrid coach Zinedine Zidane in the Spanish capital, where he arrived for €60million in 2019.

But Jovic came off the bench and scored twice in 28 minutes as Eintracht defeated Schalke 3-1 in the Bundesliga on Sunday.

Jovic matched his Madrid tally in the stunning cameo for Eintracht, where the 23-year-old netted 27 goals in 2018-19 before making the move to the Santiago Bernabeu.

Previewing Wednesday's showdown with Freiburg, Hutter discussed Jovic and his partnership with Eintracht star Andre Silva.

"Strikers are always a bit egotistical, but when it is about the team or Eintracht Frankfurt, everyone puts their ego aside," Hutter told reporters.

"Luka [Jovic] does that sovereignly. When you bring back someone who had his best time here and scored 27 goals in a year, then gets loaned out and scores two goals in 32 games, and then comes back and scores two goals in about 25 minutes, it's logical that the attention is more on that than on Andre Silva's 12th goal of the season.

"But when you hear Luka's statements that it is an honour for him to play in a team with Andre, it shows the greatness and character of Luka and it shows the respect he has for Andre Silva. I have spoken to Andre before and he said that competition is very important for him and that quality in the team is important. That doesn't bother him at all.

"I also can't imagine that Andre Silva, who has previously played for Milan and Sevilla, can't handle competition. I think he has also seen that Luka is another striker with whom he can harmonise.

"As always, I'm keeping a low profile. He [Luka Jovic] has shown in this short season that he is an absolute world-class striker with a high calibre. We'll leave it open as to whether he'll play from the start [against Freiburg]."

Silva's goal to open the scoring against Schalke was his 12th of the season, taking him level with Borussia Dortmund's Erling Haaland – only Bayern Munich star Robert Lewandowski (21) has more in 2020-21.

Eintracht – eighth in the standings – are the only team to win all three of their Bundesliga games in 2021 and have now won four on the bounce in the league for the first time since early 2019.

Serge Gnabry did not suffer a serious injury during Bayern Munich's 2-1 victory over Freiburg, Hansi Flick has confirmed.

Germany international Gnabry sat out last weekend's loss to Borussia Monchengladbach with a shin problem but played 90 minutes in the shock penalty shoot-out loss to Holstein Kiel in the DFB-Pokal on Wednesday.

He had to be replaced after 28 minutes at the Allianz Arena on Sunday but Flick is not expecting to be without the winger for a prolonged period.

"The injury is not serious, I have heard from the doctors. The muscle in his back cramped up," said the Bayern boss.

Bayern were leading when Gnabry departed thanks to Robert Lewandowski's 21st goal of the season, a record for the first half of a Bundesliga season, surpassing Gerd Muller's 20 in 1968-69.

Nils Petersen equalised for Freiburg in the 62nd minute, scoring just 28 seconds after coming on as a substitute. His Bundesliga record for goals after being subbed on now stands at 28.

But Leroy Sane, who replaced Gnabry in the first half, set up Thomas Muller - who registered his 125th top-flight assist on Lewandowski's opener - for the winner.

Sane was also on target against Kiel and Flick has been pleased to see him improving after a tough start to life with Bayern following his move from Manchester City.

"I don't like singling out individual players but he did very well and did things the team would like to see from him," said Flick.

"We saw good development. He proved today that he is always good for an assist or a goal."

With RB Leipzig having been held to a 2-2 draw by Wolfsburg on Saturday, reigning Bundesliga champions Bayern opened up a four-point lead at the summit.

Flick said: "I'm not interested in the table at the moment. We have to look at ourselves and be focused on Augsburg and Schalke as we are today.

"It's good to have achieved a four-point lead, that is extremely important. For us, only our results count."

Hansi Flick wants every member of his Bayern Munich team to work on turning their defensive struggles around as they prepare for a dangerous Bundesliga clash with in-form Freiburg.

Bayern saw their hopes of a second successive treble ended on Wednesday as they suffered a shock DFB-Pokal exit at the hands of 2. Bundesliga promotion challengers Holstein Kiel.

They conceded a 95th-minute equaliser to make it 2-2 at the end of normal time, with the second-tier side going on to prevail 6-5 on penalties.

Flick's side have not kept a clean sheet since the Champions League win over Lokomotiv Moscow on December 9, while the second of just two shutouts in the Bundesliga came back in the 5-0 defeat of Eintracht Frankfurt on October 24.

Bayern have faced the fifth-fewest total shots in the Bundesliga (160) but have conceded the sixth-most goals with 24, that total 12 more than the league leaders' closest challengers, RB Leipzig, who could have leapfrogged the Bavarian giants by the time Freiburg visit the Allianz Arena on Sunday.

Freiburg have won five successive league games and are second in the Bundesliga in 'big chance' conversion rate (58.33 per cent), so Bayern can ill-afford to present them with the kind of opportunities they have afforded their opponents all too often in 2020-21.

"It's going to be an intense game, Freiburg is known for that type of football. They're scoring a lot of goals," Flick said during a media conference on Friday.

"It's going to be about us and how we play in defence. It's down to us, the disappointment we had to digest pretty quickly, we have to make the best out of the situation now.

"The whole team is under pressure in defence, it's not only the back four. We're not getting enough pressure on to the ball, not as much as we used to."

Adding that Bayern's remarkable treble-winning efforts of last season were "not normal", Flick said: "I did expect us to experience a bit of a slump a little earlier but my team showed incredible mentality and we made it to the top of the table before the winter break.

"The engine isn't running smoothly, on Wednesday we experienced it in the most brutal fashion.

"We're making it too easy for the opponents to make chances, we have to be in better positions, we have to defend together.

"It's our job and it's our expectation to get back on top."