Frenchman Benoit lost his temper in the third game of the second set when top seed Tsitsipas halted the match to attend to a broken shoe lace.
Novak Djokovic's already brilliant season took on another dimension on Sunday when the world number one became the first man to win six Masters titles in a calendar year by dismissing Andy Murray 6-2, 6-4 in Paris.
Ukrainian fourth seed Elina Svitolina powered into the third round of the U.S. Open with a 6-4, 6-4 win against Russian Evgeniya Rodina on Thursday.
Tim Henman condemned a frustrated Andy Murray to his ninth first-round exit of the year with an impressive 6-4 6-2 victory in an all-British clash at the Thailand Open on Wednesday.
'Goran had quite a big influence on me to change my mentality and focus on my game. He changed my serve, I started to get aggressive and that is what I needed in my career'
World number one Novak Djokovic and number two Andy Murray crashed out of the Western and Southern Open within an hour of each other on Friday, before Rafa Nadal restored order with a win over old rival Roger Federer.
The top seeds will take on seventh seeds Wayne Arthurs and Paul Hanley of Australia.
The winners of the season's first three grand slams Novak Djokovic, Andy Murray and Rafa Nadal put on a masterclass at the Western and Southern Open on Wednesday, strolling into the third round with straight sets wins.
World number one Serena Williams has started her clay-court season in dominant style, beating Anna-Lena Friedsam in straight sets in the second round of the Italian Open in Rome on Tuesday.
A summary of Wednesday's action at the US Open.
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.
Murray, 28, moved up above Federer to second in the ATP's latest rankings on Monday, courtesy of his dazzling displays in Montreal culminating in 6-4, 4-6, 6-3 victory over Serb Djokovic in an absorbing three-hour duel.
'I had to learn to be patient. I am a different player and a different person than I was three years ago. I still believe I can repeat that 2015-2016 streak when I won four slams in a row, I wouldn't be here if I didn't.'
A summary of sports events and sports persons, who made news on Friday.
Dimitrov has enjoyed the best season of his career in 2017, clinching four titles overall, including his first Masters title in Cincinnati.
With 1,500 points available for an undefeated champion next week, the tournament could produce a thrilling climax with Murray and Djokovic, who have never met at the O2, facing off in the final for the year-end number one ranking.
Roger Federer dug himself out of a late slump to fend off American qualifier Noah Rubin 7-5, 6-3, 7-6(3) on Wednesday and draw vital confidence for a tough third round clash against 10th seed Tomas Berdych at the Australian Open.
This would be for the second time that Thapar, son of Indian-American immigrants, might not be able to make the final cut after being interviewed by the US president.
For all their celebrated Grand Slam past, Nadal and Federer have never clashed in a US Open final.
Rafa Nadal has returned to the Spain team as they seek to maintain their Davis Cup World Group status with a playoff tie against Ukraine in Madrid later this month, captain Alex Corretja said on Monday.
A ruthless Sorana Cirstea took full advantage of Karolina Pliskova's patchy form at the China Open on Thursday, reaching the quarter-finals as she consigned the recently dethroned world number one to a 6-1, 7-5 defeat.
Images from the third day at the US Open, the final Grand Slam tournament of the year, in New York, on Wednesday:
Summary of sports events and persons who made news on Wednesday
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.
Summary of sports events and persons who made news on Monday
With three of the four Grand Slam titles and a record six Masters Series crowns scooped up in a year of domination, Novak Djokovic could be forgiven for using the ATP Tour Finals in London as a well-earned lap of honour.
Images from Day 4 of the 2021 US Open in New York on Thursday.
Bernard Tomic is set to sit out the Australian Open after Tennis Australia (TA) decided not to award him a wildcard to the main draw, the organisers said on Thursday.
Roger Federer says he does not regret passing up the chance to topple great rival Rafael Nadal from the top of the world rankings at the ATP Finals in London this week.
Fourth seed Angelique Kerber's bid for consecutive Grand Slam titles ended when 29th seed Dominika Cibulkova defeated the German 3-6, 6-3, 6-3 in the US Open third round on Saturday.
Swiss teenager Belinda Bencic capped a brilliant run to the Rogers Cup title on Sunday.
The Serb's dominance in 2016, says Bikash Mohapatra/Rediff.com, is way beyond numbers. It's about how he forced his opponents into submission.
Rafael Nadal was cautious about predicting how his body would hold up in the run-in to the US Open on Wednesday but did reveal that he had not missed the grind of the tennis tour during his absence from the game.
Summary of sports events and persons who made news on Sunday
A summary of Thursday's play at the US Open.
Images from Day 5 of the US Open in New York on Friday
Federer has been brandishing an aggressive style of play, forcing the action and rushing in to half-volley weak second serves to forge an advantage.
Second seed Angelique Kerber stayed on track in her quest to unseat Serena Williams as world number one by beating Mirjana Lucic-Baroni of Croatia 6-2, 7-6(7) on Wednesday to reach the third round of the US Open.
Till high school, his medium of learning was Marathi. Later, he completed his doctorate under Neil Armstrong's guidance. He has travelled to close to 50 countries, sold $350 billion worth of aircraft. Anjuli Bhargava meets Boeing SVP Dinesh Keskar.