The second seeded Indo-Belarusian pair beat Jiri Novak and Pavel Vizner in the quarter-finals of the ATP Masters event.
The former world No. 1 pair meet Gaston Etlis and Martin Rodriques of Argentina in the second round of the ATP Masters Series in Toronto, Canada.
Top seeds Mahesh Bhupathi and Max Mirnyi got a walkover in the semi-final when their opponents Cyril Suk and Martin Damm withdrew.
Tsitsipas regained his composure to save a set point in the 10th game before sealing the victory in the tiebreak for his third career title.
The top seeds lost to seventh seeds Gaston Etlis and Martin Rodriguez of Argentina in the quarter-finals of the Monte Carlo Masters.\n\n
Former world number one Andy Murray is in line to play Grigor Dimitrov in the opening round of the inaugural ATP Cup, with Bulgaria qualifying among the final six teams in the nation-based tournament.
Andy Roddick battled past feisty Argentine Guillermo Coria to book the last semi-final berth at the ATP Masters Cup.
The American ace took a step closer to the title he last held 13 years ago when he beat David Nalbandian.
The American ace scored a dramatic victory over Spain's Juan Carlos Ferrero in the ATP Masters Cup.
Their exit gave the Bryan twins, Mike and Bob, the year-end world No. 1 ranking.
The World No. 2 doubles pair beat Australia's Wayne Arthurs and Paul Hanley for their first victory in the ATP Masters Cup.
Wimbledon champion Roger Federer saved two match points before defeating Andre Agassi at the ATP Masters Cup.
Rafael Nadal won a record 34th ATP Masters 1000 title with a 6-0, 4-6, 6-1 victory over Novak Djokovic in the Italian Open final on Sunday.
He is the sixth American and just the 13th player in the history of the ATP rankings to finish the year at the top.
World number one Novak Djokovic's French Open preparations were dealt with a blow as he suffered a 6-3, 4-6, 6-2 defeat by Russian Daniil Medvedev in the Monte Carlo Masters quarter-finals on Friday.
Australian Kyrgios was beaten in his first match in Lyon on Tuesday by Argentina's 94th-ranked Nicolas Kicker -- serving nine double faults during a 2-6, 6-4, 6-2 defeat.
Bhupathi and Mirnyi will take on Cyril Suk and Martin Damm of Czech Republic in the semi-final.
Sania Mirza and her Czech partner Barbora Strycova stormed into the quarter-finals of the BNP Paribas Open 2017 tennis tournament with a straight-set win over their opponents in the women's doubles at Indian Wells.
John Isner delved deep into his energy tank to outlast Germany's Alexander Zverev 6-7(4), 6-4, 6-4 and claim the biggest title of his career at the Miami Open.
American teenage sensation Coco Gauff became the youngest player to win a WTA title in 15 years as she beat former French Open champion Jelena Ostapenko in the Linz Open final on Sunday.
World number one Novak Djokovic received a free pass into the third round of the U.S. Open when Jiri Vesely of the Czech Republic withdrew from their match on Wednesday due to a left forearm injury. The walkover provided the top-seeded defending champion with an extended break to improve his niggling left wrist injury before his next match against either Guido Pella of Argentina or Mikhail Youzhny of Russia.
The 26-year-old has not always handled the expectations placed on his shoulders after he won the Wimbledon junior title in 2008 with a game style uncannily like Federer's.
Serbian former world number one Novak Djokovic will be in action at his home club, working under old coach Marian Vajda -- desperately searching for some spark after tumbling down to 13th in the rankings.
The French Open witnessed a stunning upset on its very first day as 18-year-old Anastasia Potapova outclassed Angelique Kerber 6-4, 6-2 in the first round match on Sunday.
Serena Williams brushed off some serving troubles before cruising to a 6-4, 6-3 win over Elina Svitolina on Saturday and will meet Simona Halep in the Western & Southern Open final.
hampion Rafael Nadal and top-ranked Novak Djokovic turned in impressive displays to reach the Monte Carlo Masters quarter-finals on Thursday. Nadal, chasing a record-extending 12th Monte Carlo title, broke Grigor Dimitrov's serve on four occasions to defeat the Bulgarian 6-4 6-1.
Roger Federer and Andy Murray advanced to the semi-finals of the Western & Southern Open in contrasting fashion on Friday to set up a rematch of their Wimbledon clash.
Summary of sports events and persons who made news on Monday
Novak Djokovic crushed Britain's Andy Murray 6-2, 6-3 to set up final against Roger Federer.
World number one Novak Djokovic produced sublime form to clinch an unprecedented fifth men's title at Indian Wells with a 6-2, 6-0 demolition of big-serving Canadian Milos Raonic in the men's final.
Serena Williams and Naomi Osaka advanced to the Rogers Cup quarter-finals on Thursday to set up their first meeting since the American's infamous row with an umpire overshadowed last year's US Open final.
Rafael Nadal is likely to end the year without a grand slam singles title for the first time since his debut French Open crown in 2005 following his shock Wimbledon exit on Thursday, his uncle and coach Toni has conceded.
Rafael Nadal returns to his favourite tournament, albeit not his preferred court, to begin pursuit of a record-extending 10th French Open title on Monday against Frenchman Benoit Paire.
Greek teenager Stefanos Tsitsipas slayed another tennis giant on Saturday, saving a match point as he toppled big-serving Kevin Anderson 6-7(4), 6-4, 7-6(7) in a thriller to set up a Rogers Cup final against top seed Rafael Nadal.