Novak Djokovic celebrates his first title in Cincinnati.

Celebration Selfie: Novak Djokovic marks the final step of his historic march to completing the Career Golden Masters.

After losing to Novak Djokovic on Sunday, Roger Federer is now 7-1 in Cincinnati finals.

Roger Federer and Novak Djokovic met for the 46th time in Cincinnati in 2018.

Novak Djokovic lifts his first trophy in Cincinnati, completing the Career Golden Masters.

Bruno Soares and Jamie Murray triumph in Cincinnati to capture their third title of the season (also Acapulco and Washington, D.C.).

Jamie Murray and Bruno Soares earn their first ATP World Tour Masters 1000 title as a team, triumphing in Cincinnati.

Jamie Murray and Bruno Soares will try to lift their first ATP World Tour Masters 1000 trophy as a pair on Sunday.

Roger Federer earns an eighth appearance in the Cincinnati final.

Roger Federer earns an eighth appearance in the Cincinnati final.

Novak Djokovic books his spot in a sixth Cincinnati final.

Roger Federer owns a 7-0 record in Western & Southern Open semi-finals.

Roger Federer is going for his eighth Western & Southern Open title this week in Cincinnati.

Stan Wawrinka battles Roger Federer on Friday at the Western & Southern Open in Cincinnati.

David Goffin looks to win his first ATP World Tour Masters 1000 title this week in Cincinnati.

Jean-Julien Rojer and Horia Tecau advance to the quarter-finals in Cincinnati for the fifth consecutive year.

Novak Djokovic extends his FedEx ATP Head2Head series lead against Milos Raonic to 9-0 with a three-set win Friday.

Milos Raonic snapped a 17-set losing streak against Novak Djokovic, but could not earn his first FedEx ATP Head2Head victory against the Serbian.

Novak Djokovic is going for his first Western & Southern Open title this week.

Marin Cilic wins his eighth and ninth consecutive matches in Cincinnati on Friday to reach the semi-finals.

Roger Federer reaches the quarter-finals in Cincinnati for the 10th time with a win against Leonardo Mayer.

Juan Martin del Potro advanced to the quarter-finals of the Western & Southern Open for the third time, beating Nick Kyrgios.

Lukasz Kubot and Marcelo Melo break three times to defeat Raven Klaasen and Michael Venus in Cincinnati on Thursday.

Novak Djokovic is trying to extend his FedEx ATP Head2Head series lead against Grigor Dimitrov to 8-1.

Milos Raonic levels his FedEx ATP Head2Head series with Denis Shapovalov at 1-1.

Juan Martin del Potro defeats 2017 Next Gen ATP Finals champion Hyeon Chung in their first FedEx ATP Head2Head meeting.

Nick Kyrgios reaches the third round of the Western & Southern Open in Cincinnati on Wednesday.

Stan Wawrinka claimed three consecutive breaks of serve against Kei Nishikori.

Bruno Soares and Jamie Murray defeat Ryan Harrison and Nicholas Monroe at the Western & Southern Open on Wednesday.

Novak Djokovic beats Adrian Mannarino in three sets at the Western & Southern Open on Wednesday.

Robin Haase will face American Mackenzie McDonald in the US Open first round.

Robin Haase defeats Alexander Zverev in three sets at the Western & Southern Open on Wednesday.

Alexander Zverev leads the ATP World Tour in tour-level match wins this season.

Roger Federer wins his opener at the Western & Southern Open on Tuesday.

Denis Shapovalov records his 25th match win of the year with yet another hard-fought victory over Kyle Edmund on Tuesday in Cincinnati.

Roger Federer wins his opener at the Western & Southern Open on Tuesday in Cincinnati.

Roger Federer extends his win streak in Cincinnati to 11 with victory over Peter Gojowczyk.

Roger Federer's win over Peter Gojowzyck is his first at the Western & Southern Open since winning the title in 2015.

Fans have fun with ATP World Tour doubles stars at the Western & Southern Open doubles showdown on Monday in Cincinnati.

David Goffin beats #NextGenATP Greek Stefanos Tsitsipas in straight sets at the Western & Southern Open on Tuesday.

Nick Kyrgios defeats Denis Kudla after saving a match point at the Western & Southern Open on Tuesday.

Hyeon Chung beats Jack Sock in three sets at the Western & Southern Open on Tuesday.

Novak Djokovic needs nine match points to take down Steve Johnson Monday night.

Stan Wawrinka earns his third Top 20 win of the season, upsetting 12th seed Diego Schwartzman in Cincinnati.

Novak Djokovic wins his first match in Cincinnati since 2015.

Roger Federer is chasing an eighth title at the Western & Southern Open.

Lucas Pouille beats Andy Murray for the first time in their fifth FedEx ATP Head2Head meeting.

Andy Murray, a two-time Cincinnati champion, loses in the first round against Lucas Pouille.

Novak Djokovic is pursuing the one ATP World Tour Masters 1000 title he has not one at the Western & Southern Open in Cincinnati.

Kyle Edmund is the 14th seed at the Western & Southern Open. He beat American Mackenzie McDonald on Sunday in straight sets.

Kyle Edmund will next meet either Frances Tiafoe or Denis Shapovalov in Cincinnati.