A summary of Friday's tennis action from around the world.
World No 55 Haase improved to a 2-2 career record against Zverev, including victories in their last two meetings.
The world number one had arrived in Tokyo aiming to become the first man to win all four majors and an Olympic gold medal in the same calendar year. But that quest came to an end after he was beaten by fifth-ranked German Alexander Zverev in Friday's semi-final.
Raucous home support for holders Argentina did not make up for the absence of Juan Martin del Potro and Federico Delbonis on Friday as they fell 2-0 behind to Italy in the first round of the Davis Cup.
Rafael Nadal gave Russian teenager Andrey Rublev a tennis lesson on Wednesday, racing into the semi-finals of the US Open with a ruthless 6-1, 6-2, 6-2 win that cleared the path for a possible showdown with rival Roger Federer.
India's No 1 singles player Somdev Devvarman on Monday jumped 18 places to become World No 78 in the latest ATP rankings. The tennis star had his Delhi Open triumph to thank.
Tournament officials said there was no heat rule in effect on Friday for the first time in three days, with cloud cover expected to bring cooler temperatures.
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Fourteen-time Grand Slam champion Rafael Nadal has entered the quarter-finals of the ATP Acapulco tournament with a comprehensive straight-sets victory over Italy's Paolo Lorenzi.
Order of play on the main show courts at the French Open.
The ATP Tour got on board and last month fans were able to bid for private sessions with celebrated tennis coaches on-site during tournaments in 2021.
Rafael Nadal swept into the quarter-finals of the Italian Open on Thursday with a ruthless 6-4, 6-1 victory over Canadian teenager Denis Shapovalov. The top seed, who will reclaim the world number one ranking from Roger Federer if he wins his eighth title in Rome, turned in a near-flawless performance, losing only five service points as he honed in on victory in an hour and 22 minutes.
World number two Simona Halep beat Maria Sharapova 6-2, 6-2 in the China Open third round on Wednesday for her first win over the Russian in eight attempts.
'He's one of those players that are dangerous for everybody'
An elbow injury forced Djokovic to retire against Czech Tomas Berdych in the quarter-finals of Wimbledon in 2017. After that came a series of early tournament exits and, finally, surgery.
Beaten twice by Nadal in the space of a month, in the Barcelona and Madrid Open finals, Thiem took his revenge by handing the 30-year-old Spaniard a first clay court defeat of the season in Rome.
Debutant Stefanos Tsitsipas crushed defending champion Alexander Zverev 6-3, 6-2 on Wednesday to book his place in the last four of the ATP Finals with a match to spare.
Live tennis action is a fading memory during the coronavirus shutdown but 20,000 fans tuned in to watch old rivals Novak Djokovic and Andy Murray chew the fat on Instagram on Friday. Sitting on their sofas at home, the duo spent an entertaining hour reminiscing about some of the classics in their 36-match series, painful losses and even came up with the perfect tennis player.
The 32-year-old debutant at the ATP's blue riband event won the first 11 games of the round-robin clash before a relieved Nishikori finally got on the scoreboard with an angled winner.
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.
Roger Federer took a big step towards securing his endangered place in the ATP World Tour Finals by overcoming rising Canadian talent Vasek Pospisil 6-3, 6-7(3), 7-5 in the Basel Open semi-finals on Saturday.
Roger Federer, not known for serious slip-ups in his flowing run to a record 17 grand slam singles titles, has come clean about the left knee injury that sidelined him for nearly two months.
World number one Rafael Nadal set a new record of winning 50 consecutive sets on a single surface by beating Argentine Diego Schwartzman 6-3, 6-4 on Thursday to reach the Madrid Open quarter-finals.
Novak Djokovic sat out last year's U.S. Open to rest an elbow injury that eventually required surgery, but that pain and frustration felt like a distant memory on Friday when the Serb completed his march to the New York final with authority.
The Scotsman doesn't expect to win US Open this year
He leads the men's seedings ahead of defending champ Roger Federer, with Bulgarian Grigor Dimitrov seeded third.
Andy Murray suffered his first defeat in nearly three months on Thursday when he was beaten by Latvia's Ernests Gulbis in the third round of the Rogers Cup. Playing just his second match since winning Wimbledon, Murray fell 6-4, 6-3 in less than an hour and a half in one of the key lead-up events to the US Open.
Reaching ATP Finals like winning a tournament, says Zverev
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IMAGES from the matches played on Day 2 of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on Tuesday.
Roger Federer ended Grigor Dimitrov's seven-match winning streak and showed the Bulgarian he has some way to go to live up to his 'Baby Federer' tag with a 6-3 7-6 (2) quarter-final victory at the Basel Open on Friday.
Audacious coups by Andy Murray and Angelique Kerber have transformed the tennis landscape and they will begin 2017 eyeing the kind of domination that few would have thought possible at the start of a seismic year.
Former champion Rafael Nadal shrugged off concerns about his fitness ahead of the Australian Open and paid tribute to fellow 'Big Four' rival Andy Murray, a day after the emotional Briton revealed plans to retire.
A golden moment for Australian Ashleigh Barty and American CoCo Vandeweghe was tinged with disappointment when tournament officials did not let them speak to the crowd after winning the U.S. Open women's doubles final on Sunday.
Rafael Nadal and Marc Lopez of Spain won the Olympic men's doubles tennis title on Friday, beating Romania's Florin Mergea and Horia Tecau to secure their country's third gold medal of the Rio Games.
Defending champion Rafael Nadal failed to win a single game in the opening set of his US Open quarter-final against Dominic Thiem on Tuesday but fought back to beat the Austrian 0-6, 6-4, 7-5, 6-7 (4), 7-6 (5) in match that ended past 2 am in New York.
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Novak Djokovic lost his momentum in the second half of last season and was toppled as the world number one by Andy Murray because his work-rate dropped, the Serbian's former coach Boris Becker said on Wednesday. Speaking a day after the two terminated their cooperation by mutual consent, German Becker said Djokovic's need to spend more time with his family had derailed him on the court.