Novak Djokovic has brought up his 378th week as world number one.

That sees the 35-year-old, 22-time grand slam champion overtake Steffi Graff as the outright record holder for the amount of weeks spent at the top of the world.

Djokovic won his first major in 2008, and has not looked back.

To mark his achievement, Stats Perform has used Opta data to run through the key numbers from Djokovic's stellar career.

ATP Tour titan

7 - Djokovic has been year-end number one on seven occasions, one more than Pete Sampras and two more than Roger Federer, Rafael Nadal and Jimmy Connors.

93 - Djokovic has won 93 ATP Tour titles. Only three players have won more in the Open Era.

1,249 - The Serbian has played 1,249 matches on the ATP Tour. Just Nadal (1,288), Ivan Lendl (1,310), Federer (1,526) and Jimmy Connors (1,558) have played more.

350 - Djokovic has featured against top-10 opponents 350 times, more than any other player in history. He has won 243 of these matches. 

A master at work

22 - Only Serena Williams (23) has more major titles in the Open Era than Djokovic, who is tied with Nadal for the most grand slam triumphs when it comes to men.

33 - Djokovic has played in 33 grand slam finals, the most by any male player in the Open Era. Only Chris Evert (34) has more when it comes to female players.

37 - He has won 37 per cent of the grand slam titles on offer since (and including) his maiden major success in Melbourne in 2008. Nadal has won 32 per cent (19/60) and Feder 13 per cent (8/60).

28 - No player has won more consecutive matches at the Australian Open than Djokovic (28), while he has won 28 straight at the Wimbledon, too.

10 - Djokovic is the first player to play a minimum of 10 semi-finals at each of the grand slams.

2 - After his 10th triumph at the Australian Open, Djokovic became the second male player in the Open Era to secure 10+ titles in a single grand slam, after Nadal (14 French Open titles).

38 - No player has won more ATP 1000 titles than Djokovic (38), Eleven of those titles were won without losing a set.

6 - Djokovic has won the most ATP 1000 titles won in a single season (six).

Nemesis Nadal

59 - Nadal is the player Djokovic has faced the most times in his career (59). The Spaniard has lost 30 of those matches, marking Djokovic's best win tally against a single opponent.

179 - Djokovic has faced players from Spain 179 times, winning 131 matches and losing 48.

29 - He has won 130 matches against left-handed players, losing 40. Of those 40 defeats, 29 were inflicted by Nadal.

100 - Djokovic has a 100 per cent record against four players: Gael Monfils (18-0), Jeremy Chardy (14-0), Milos Raonic (12-0) and Andreas Seppi (12-0).

Novak Djokovic is amassing such a dossier of evidence that no sober judge would dispute his claims, but debate still rages as to who is the greatest men's tennis player of all time.

The 35-year-old has now racked up 378 weeks at number one on the singles rankings, not only improving his record among the men but also this week going past Steffi Graf, the leader on the women's tour.

Djokovic has won 10 of the last 16 grand slams he has contested, all since turning 30, and has moved level with Rafael Nadal on 22 singles majors, the most ever captured by a man.

His stockpiling of Masters 1000 titles is bordering on being greedy, with a record 38 tucked away, and although he turns 36 in May there is no sign of Djokovic slowing down.

Tommy Haas snatched three wins from nine encounters with Djokovic, while the Serbian was going up through the gears early in his career.

Haas told Stats Perform he sees Djokovic as a player who wants to "end that debate" over who is the greatest, but there are good grounds to reason the man from Belgrade has already done enough.

Djokovic's compelling case

With plenty of miles left in his legs, Djokovic has already reached 33 grand slam finals (W22 L11), the most by any man. It puts him level with Serena Williams (W23 L10) and one behind Chris Evert (W18 L16), who is perhaps a surprising leader in this field.

Given his form in the past 12 months, it would be astonishing if Djokovic does not reach more slam finals this year.

He has also won 38 Masters titles – the next rung down from the grand slams – and is not just the only singles player to have won every one of these nine tournaments, he has won each one at least twice.

Djokovic's six end-of-season ATP Finals titles puts him level with Federer.

Adding together grand slams, ATP Finals crowns and Masters 1000 wins, Djokovic has 66 of these so-called 'Big Titles', seven more than Nadal, who sits second on the list. It bears pointing out the Masters events only began in 1990, so this puts players of the modern era at an advantage, but the domination of these events by the likes of Djokovic, Nadal and Federer mirrors their unprecedented grand slam supremacy.

Djokovic has an 83.5 per cent career win-loss record (W 1,043, L 206), the best of all players with at least 200 matches on tour during the Open Era (since 1968).

In the slams, his win-loss record of 341-47 gives Djokovic an 87.9 per cent winning record, just a shade behind Nadal's 88 per cent, and ahead of Federer (86 per cent).

Djokovic is rapidly closing in on overtaking Nadal's win percentage, having powered through his last 14 matches at the majors, triumphing at Wimbledon and the Australian Open.

These winning percentages at the slams by the Big Three are not the absolute highest of all time, but considering Djokovic, Nadal and Federer have regularly had to play one another over the past two decades, that is easily explained.

Only Bjorn Borg (71.1 per cent) has a higher win percentage against top-10 players than Djokovic's 69.4 per cent, but Borg's career was relatively brief, stepping off the tour in his mid-20s, with Djokovic a model of sustained excellence.

Djokovic is playing in Dubai this week, seeking more trophy success.

The expert's view

"He's the ultimate competitive warrior out there," says Tommy Haas. "He doesn't leave a stone unturned, does everything that he possibly can to be the best that he can be."

Haas is now tournament director at the Indian Wells Masters – aka the BNP Paribas Open – and he had better results than most against Djokovic, scoring wins on grass in Halle and Wimbledon in 2009 before repeating the trick on hard court in Miami four years later.

Djokovic, it can be argued, is a better player at 35 than he was at 25, and he is certainly more dominant. The man who feeds off his inner "wolf energy" has lost none of his bite.

"He's spoken about it himself many times, the sort of upbringing that he had, the experiences that he had to go through just to put so much grit in him, so much fire and fighting power. And you see it. The guy is an absolute beast out there," Haas said.

"There's no doubt in my mind that in his mind he wants to become the greatest of all time and win the most slams and end that debate and I think that's that's what he's looking to do.

"We're getting a little bit ahead of ourselves now but let's just say he does have the most slams. He's won every Masters series there is, maybe the most of all of them as well. Longest number one, most slams and then I think there is no room to argue."

Is winning enough to define greatness?

Yes. It has to be. In hand-to-hand combat, whether in war or something as relatively frivolous at tennis, it's all about getting the better of the enemy. Then it's about continuing to do so, and if it's easy on the eye, all well and good.

Roger Federer played the most sumptuous tennis that made him a bigger draw than anyone, and the Swiss great was also a sensational winner to boot, and a charmer, but Djokovic is picking off his records one by one.

Does this make Djokovic the most popular tennis player of all time? No, he rarely exhibits the warmth of personality that Federer brought, the crowd-pleasing flourishes are in shorter supply, and he brings some of the bad press and occasional crowd antipathy on himself.

But winning is the priority for Djokovic, and nobody does it better.

Haas says: "Really, can you say does he have the prettiest game or the best shot selection or this and that? Without Roger and without Rafa he would have been pushed to become that good of a player? Maybe not. And you have to always look at every generation pushing each other and all that stuff.

"And the debates can go on and on. Bjorn Borg retired when he was 26 years old, he won 11 slams. What if he would have played 10 more years? Yeah, he probably could have had 20."

But Djokovic has 22 and is hurtling towards Margaret Court's 24 slams, the most by a woman. There is no doubt he believes he can go beyond that, and keep going.

Shingo Kunieda won 28 wheelchair singles majors, and Djokovic might even get up towards that number.

For now, the number that matters is number one. Whether you like him or not, the man they call Nole is hurtling into history as the champion supreme.

Camila Giorgi claimed her first WTA title since 2021 as she overcame Swedish qualifier Rebecca Peterson in three sets to secure the Merida Open crown on Sunday.

World number 68 Giorgi triumphed 7-6 (7-3) 1-6 6-2 over Peterson in a see-sawing decider that lasted two hours and 25 minutes in Mexico.

Giorgi seemed in strife when she trailed 2-0 in the third set after losing a lopsided second frame, but hit back emphatically by reeling off the final six games.

The victory was Giorgi's fourth WTA title and first since winning the Canadian Open in 2021, helping her return to the top-50 when the next rankings are released on Monday.

The Italian had qualified for her 10th career WTA final without dropping a set, including a 6-0 6-0 double bagel rout of second seed Sloane Stephens in the quarter-finals.

Peterson had enjoyed a resurgent tournament after an injury-hit 2022 season, but was unable to claim her first WTA title since 2019.

Cameron Norrie avenged last week's Argentina Open final defeat to Carlos Alcaraz by fighting back to beat the injury-hit Spaniard in a back-and-forth Rio Open final on Sunday.

Defending Rio Open champion Alcaraz was hampered by an injury to his right leg as he was pegged back after taking the opener, with Norrie eventually claiming a 5-7 6-4 7-5 win.

Alcaraz performed admirably despite seeing his movement limited in a nail-biting decider, but Norrie's power ultimately proved too much as the 27-year-old took his fifth ATP career title.

Top seed Alcaraz – playing in his 10th tour-level final at the age of 19 – started well and had forced seven break points by the time he took a thrilling first set, allowing Norrie just one.

With Alcaraz stopping to have his right thigh wrapped after appearing to be in discomfort, Norrie roared back and took the second set following three straight breaks of serve.

That teed up a dramatic finish, with Alcaraz playing a series of delightful drop shots to take the first break of the decider despite playing at walking pace for long periods. 

Alcaraz stopped to tear the wrapping off his leg as the pair traded breaks in front of a lively crowd in Brazil, but it proved a bridge too far for the Spaniard as Norrie pinned him back, hitting several excellent returns to claim his first final success against a top-10 ranked opponent.  

"It's so special to win this one, especially after losing a couple of finals already this year," Norrie told Amazon Prime Video. "I had to do it the tough way, you know? 

"I was looking done there and I just managed to flip a switch and turn it around. It's a good day, especially on a surface I'm not too comfortable with. I had to battle a lot of demons in the last couple of weeks."

Hubert Hurkacz fought off Frenchman Benjamin Bonzi to land the Open 13 Provence title in Marseille on Sunday.

Poland's former Wimbledon semi-finalist scored a 6-3 7-6 (7-4), serving 19 aces as he justified his status as the tournament's top seed.

Hurkacz broke serve in the fourth game of the opening set to seize command of the match, before resisting a determined effort from Bonzi in the second set to force a decider.

A sixth win in seven ATP finals for the 26-year-old Hurkacz came when Bonzi sent a forehand just wide.

The result means Bonzi, playing his second ATP final, has again been kept waiting for a first trophy success at this level, having also lost in the Pune title match to Tallon Griekspoor at the start of the year.

Bonzi, born in nearby Nimes, was hoping to become the first French champion at this event since 2017, when Jo-Wilfried Tsonga defeated compatriot Lucas Pouille in the final.

Hurkacz praised Bonzi in an on-court interview, telling the crowd: "He played really, really well. He deserved to win the second set. I just tried to compete as hard as I can.

"I think my game's getting better, and I'm super happy with the way I competed today. I know you guys wanted Benjamin to win."

Emma Raducanu has withdrawn from the inaugural Austin Open after contracting tonsillitis.

The 20-year-old has not played since her defeat in the Australian Open to Coco Gauff in January.

The Briton shot to tennis stardom with victory at the 2021 US Open, setting a record for the fewest majors played (two) before winning a title.

But a frustrating run of injuries and poor form across 2022, which also included numerous coaching changes, has seen her plummet to number 81 in the WTA Rankings and fail to reach the third round of a slam since her famous triumph.

"I'm sorry to have to withdraw from the ATX Open," Raducanu said on Sunday,

"I am currently suffering from tonsillitis and am unable to compete this week. Thank you to the tournament for the great hospitality here in Austin."

Italian Camila Giorgi knocked out another seed on her way to clinching a spot in the Merida Open final where she will face Sweden's Rebecca Peterson.

Giorgi triumphed 7-5 7-6 (7-2) over fourth seed Katerina Siniakova in two hours and 12 minutes in Saturday's semi-final in Akron.

The Italian world number 68 had routed second seed Sloane Stephens 6-0 6-0 on Friday to earn her spot in the last four.

Swedish qualifier Peterson secured her final berth with a 6-2 6-7 (4-7) 6-4 over American Caty McNally.

The topsy-turvy match lasted almost three hours, with Peterson fighting back from 4-0 down in the third set by winning the final six games for victory.

Top seed Carlos Alcaraz fought back from a set down against Nicolas Jarry to keep alive his Rio Open title defence by booking a spot in Sunday's final.

The Spanish 19-year-old triumphed 6-7 (2-7) 7-5 6-0 to win in two hours and 43 minutes in Saturday's semi-final.

Alcaraz raced away with the match with a third-set bagel in 32 minutes after both of the first two sets lasted more than an hour each.

The 2022 US Open champion produced one of the shots of the season to go 2-0 up in the third set, producing a remarkable running pass down the line.

Alcaraz had undergone treatment on his upper left leg late in the second set at 5-5 but showed off his toughness to reel off eight straight games.

"I'm so proud of myself," Alcaraz said, having only just returned from injury in last week's Argentina Open which he won. "To be in a final again in my second tournament is a really special moment for me... I couldn't ask for a better start of 2023."

The Spaniard will take on second seed Cameron Norrie in the decider, after the Briton won 6-2 3-6 7-6 (7-3) over Bernabe Zapata Miralles in Saturday's other semi-final.

Norrie needed two hours and 32 minutes to get the better of Zapata Miralles, meaning he has won 13 of his past 15 tour-level semi-finals.

Alcaraz and Norrie faced off in last week's Argentina Open final, which the Spaniard won in straight sets.

Top seed Hubert Hurkacz saw off a spirited Alexander Bublik in straight sets to seal his place in the final of the Open 13 Provence with a 6-4 7-6 (7-4) win.

The world number 11 wrapped up victory in his semi-final in Marseille without being taken to a deciding third set for the first time during his tournament run.

But he was still forced to fight for the result, after unseeded Kazakhstani Bublik pushed him hard in their encounter.

Hurkacz only broke serve once during the first set and had to hold his nerve in a second-set tie-break to finish the job.

He will face a homegrown opponent in Benjamin Bonzi in the final, after the latter won an all-French last-four encounter with wild card Arthur Fils.

The former saw off his fellow countryman 6-4 6-4 in a straight-sets triumph of his own.

Barbora Krejcikova stunned Iga Swiatek to win the Dubai Tennis Championships, cruising past the world number one in straight sets to clinch her first WTA 1000 title. 

By following up victories over Aryna Sabalenka and Jessica Pegula with a ruthless 6-4 6-2 dismantling of Swiatek, Krejcikova became just the fifth woman to beat each of the world's top three players at a single tournament in the last 40 years.

Krejcikova entered Saturday's meeting as the only player to have beaten Swiatek in her eight hard-court finals at tour level, having done so at the Ostrava Open last October.

The Czech looked to be drawing on that experience as she made a flying start, breaking in the opening game through a well-struck backhand. 

Though Swiatek responded with a break of her own in the sixth game, a rare double fault from the Pole saw the momentum swing Krejcikova's way.

Another excellent backhand return gave Krejcikova the opening set's decisive break, after which a visibly frustrated Swiatek was handed a time violation by the umpire.

Things did not get much better from there for the three-time grand slam winner, with a series of masterful returns helping Krejcikova seal two dominant breaks before wrapping things up.

Having clinched a highly impressive win within 91 minutes, Krejcikova told Amazon Prime Video: "It means a lot. 

"It was a great week for me, I was improving with every single game and today, I think I showed my best. 

"I really have to admire Iga for what she is doing. To me, she is a big inspiration and she motivates me every day. It was a great final and I'm definitely happy with the result."

Daniil Medvedev defied Andy Murray in the Qatar Open final to clinch a second title in seven days as the resurgent Russian won the battle of former world number ones.

In-form Medvedev scored a 6-4 6-4 victory on Saturday as he followed up last Sunday's title in Rotterdam with another trophy success.

Three-time grand slam winner Murray, set to jump 18 places to 52nd in the new rankings, had saved eight match points en route to the Doha final.

He pushed Medvedev hard but could not get the better of a player who will nudge up one spot to seventh in the rankings on Monday.

Murray came back from 0-40 in the opening game to force deuce, but he could not hold serve, and Medvedev soon broke again to lead 4-1.

But back came Murray, and the Briton had a break point to square up the opener at 4-4, only for Medvedev to cling on.

The second set also began with Murray dropping serve, but the 35-year-old levelled up at 3-3 with a backhand winner at the end of a terrific rally.

That raised his hopes of a full-scale fightback and a third title success at this event, plus a first tournament victory since 2019 in Antwerp, but Murray was broken from 40-0 in the ninth game, and that looked to end his hopes.

Murray saved a ninth match point of the week, albeit thanks to a double fault from his opponent, but the Scot could not do so for a 10th time, with a lob from Medvedev giving him a big win and the 17th tour-level title of his career.

Medvedev, the 2021 US Open champion, told Amazon Prime Video in a courtside interview: "It was a very tough match. I'm happy to win, today was a big fight.

"Both of us sometimes were playing bad, then suddenly both of us were playing amazing, and I'm happy to win.

"It was tough for Andy to put the ball through me many times. Now it has to continue, so I'm going to try for as long as I can."

The top two seeds at the Rio Open remain on a collision course after both Carlos Alcaraz and Cameron Norrie advanced to the semi-finals on Friday.

World number two and top overall seed Alcaraz was strong in his 6-4 7-6 (7-0) victory over Serbia's Dusan Lajovic, improving his unbeaten record in 2023 to 6-0.

Alcaraz has his eyes set on his second title win in a row after also emerging triumphant in last week's Argentina Open.

Meanwhile, Norrie had to fight back from an early deficit to eliminate Hugo Delien 4-6 6-1 6-4, with the world number 13 and second seed now boasting eight wins from his past nine matches. The only loss during that stretch was to Alcaraz in the Argentina Open decider.

For a chance to avenge that loss, Norrie will have to beat Bernabe Zapata Miralles after he overcame Albert Ramos-Vinolas 6-4 2-6 6-4 in an all-Spanish quarter-final.

Alcaraz will contend with Nicolas Jarry, after the unseeded Chilean knocked out his second seeded opponent of the tournament, this time getting the better of Sebastian Baez 6-3 7-6 (7-3).

Andy Murray will play Daniil Medvedev in the Qatar Open final after the 35-year-old came through yet another lengthy contest in his semi-final against Jiri Lehecka.

Murray appeared to be on course for a routine win after taking the first set 6-0, but was broken early in the second, eventually losing 6-3 to take him to a fourth three-set contest in four matches this week in Doha.

Lehecka should have won a hard-fought decider when 5-4 and 40-0 up on his own serve, but Murray's trademark resilience saw him break back despite facing five match points against, before ultimately winning the tie-break 8-6.

"I don't know how I managed to turn that match around," Murray said after the win. "In the 5-4 game, I think I played most of the match points really well. He missed one bad shot on the deuce point in that game at 5-4, but I played the match points pretty well.

"It's been an amazing start to the year. I have never experienced this in my whole career, like this many matches... It was sort of looking [like it might be a quicker match] for 30 minutes and then it turned into something completely different. Yeah, just amazing that I managed to turn that around."

Murray equalled Jimmy Connors for the fifth-most ATP hard court wins in the Open Era (489), and will play Medvedev in the final after the Russian's 6-4 7-6 (9-7) win against Felix Auger-Aliassime.

The Canadian had three set points in the second set tie-break to try and force a decider, but Medvedev showed determination to turn it around and seal his place against Murray in the final.

At the Open 13 Provence, number one seed Hubert Hurkacz is through to face Alexander Bublik in the semi-finals, with both also having to come through three-set matches in a deciding tie-break.

Hurkacz was finally able to overcome Mikael Ymer 6-3 3-6 7-6 (8-6) before Bublik defeated Grigor Dimitrov 7-5 3-6 7-6 (8-6).

Third seed Alex de Minaur was shocked by Benjamin Bonzi, who broke the world number 23 four times on his way to a 6-2 6-4 victory to avenge his third-round defeat at the Australian Open.

Bonzi will meet qualifier Arthur Fils in the final four after the French 18-year-old beat former world number three Stan Wawrinka 6-2 6-3 to reach a second straight tour-level semi-final.

Barbora Krejcikova will play Iga Swiatek for the Dubai Tennis Championships title after settling a see-saw semi-final against Jessica Pegula in ruthless fashion.

Having seen Swiatek brush aside Coco Gauff in straight sets in the first match of the day, Krejcikova would have been confident of doing likewise after taking the opener against Pegula.

Third seed Pegula battled back to take the second set, though, and the American appeared to have momentum on her side, only to bow out in a one-sided decider, losing 6-1 5-7 6-0 for her first defeat to Krejcikova.

The pair's only prior meeting had been a straight-sets win for Pegula at the Australian Open earlier this year.

Pegula's sole other tournament since Melbourne had ended in similar circumstances to this one, with a 6-3 6-0 crushing at the hands of Swiatek in the final of last week's Qatar Open. The Pole is who Krejcikova must play next.

Krejcikova is the first player since Svetlana Kuznetsova in Cincinnati in 2019 to beat two top-three opponents at the same WTA 1000 tournament.

Yet after seeing off number two Aryna Sabalenka in the quarter-finals and number three Pegula in the semis, she faces the world number one in the final.

Swiatek has had a rather more straightforward path, granted a walkover in the last eight and then, on Friday, playing Gauff, who she continues to dominate.

The Pole is now 6-0 across her career against Gauff, winning all of those matches in straight sets.

Gauff at least made Swiatek work a little harder than she has in many recent matches, going down 6-4 6-2 – the first match since Melbourne in which the number one has not won a set either 6-0 or 6-1, piling up the 'bagels' and 'breadsticks'.

Swiatek is 2-1 against Krejcikova for her career, although the Czech won their most recent meeting and their only encounter in a final in Ostrava last year.

World number two Carlos Alcaraz had to come from a set behind to defeat Fabio Fognini 6-7 (5-7) 6-2 6-4 on Thursday to advance to the Rio Open quarter-final.

The 19-year-old phenom has now won all five of his matches in 2023 after winning last week's Argentina Open, and the 2022 Rio champion is now three wins away from defending his title at South America's only ATP 500 event.

Against Fognini, Alcaraz lost the first set despite creating 11 break point opportunities, as his Italian opponent converted all four of his own chances in a back-and-forth battle. 

The Spaniard tightened up his service game down the stretch, only allowing Fognini one break point opportunity from the second and third frames combined, and he will now play Dusan Lajovic following his 6-2 6-4 win against Serbian compatriot Laslo Djere.

Chile's Nicolas Jarry is still yet to lose a set in the tournament, following up his impressive upset of third seed Lorenzo Musetti with a 6-2 6-2 triumph over Pedro Martinez.

Jarry will get a crack at another seeded opponent next when he takes on Argentina's sixth seed Sebastian Baez, who emerged victorious 7-5 7-6 (8-6) after two gruelling sets against Peru's Juan Pablo Varillas.

Fourth seed Francisco Cerundolo was eliminated 6-1 4-6 6-1 by Bernabe Zapata Miralles, who will meet Albert Ramos-Vinolas in an all-Spanish quarter-final after he fought off Daniel Elahi Galan 6-2 6-4.