Naomi Osaka's stunning loss to Marketa Vondrousova in the third round of Olympics play was the top story around the tennis world Tuesday, and justifiably so. But the men's draw had some intriguing matchups on tap, along with a bit of a rain delay to slow down the proceedings.
Highlighting the action was third-seeded Stefanos Tsitsipas of Greece beating American Frances Tiafoe in straight sets, as well as Japan's Kei Nishikori getting past another American in Marcos Giron on his home turf.
Below, we'll break down the completed matchups and storylines from the men's round-of-32 draw.
(3) Stefanos Tsitsipas (GRE) def. Frances Tiafoe (USA); 6-3, 6-4
Kei Nishikori (JPN) def. Marcos Giron (USA); 7-6(5), 3-6, 6-1
(8) Diego Schwartzman (ARG) def. Tomas Machac (CZE); 6-4, 7-5
Liam Broady (GBR) def. (7) Hurbert Hurkacz (POL); 7-5, 3-6, 6-3
(12) Karen Khachanov (ROC) def. James Duckworth (AUS); 7-5, 6-1
Jeremy Chardy (FRA) def. (11) Aslan Karatsev (ROC); 7-5, 4-6, 6-3
(14) Ugo Humbert (FRA) def. Miomir Kecmanovic (SRB); 4-6, 7-6(5), 7-5
Ilya Ivashka (BLR) def. Mikhail Kukushkin (KAZ); 6-7(4), 6-3, 6-3
Tsitsipas, the top-seeded men's player in action Tuesday, handled his business without much drama.
The Greek star defeated the United States' Tiafoe behind nine aces, 10 forehand winners and an impressive service game in general (he won 28 of 31 first-serve points). So dominant was Tsitsipas that Tiafoe had just one break-point opportunity and failed to convert it.
⚡️ For the love of the country 🇬🇷<a href="https://twitter.com/steftsitsipas?ref_src=twsrc%5Etfw">@steftsitsipas</a> making strides for Team Greece in Tokyo, beating Tiafoe 6-3 6-4 to reach the third round. <a href="https://twitter.com/hashtag/Olympics?src=hash&ref_src=twsrc%5Etfw">#Olympics</a> • <a href="https://twitter.com/hashtag/Tennis?src=hash&ref_src=twsrc%5Etfw">#Tennis</a> • <a href="https://twitter.com/hashtag/Tokyo2020?src=hash&ref_src=twsrc%5Etfw">#Tokyo2020</a> <a href="https://t.co/nbMXZRGQnm">pic.twitter.com/nbMXZRGQnm</a>
David Kane @DKTNNS
Tsitsipas avenges his Wimbledon loss to Tiafoe, 6-3, 6-4 in some style at the <a href="https://twitter.com/hashtag/Olympics?src=hash&ref_src=twsrc%5Etfw">#Olympics</a> <br><br>Stef drops just one point on serve in the second set. <a href="https://t.co/9WbjOBj4US">pic.twitter.com/9WbjOBj4US</a>
It surely was particularly sweet beating Tiafoe to advance in the Olympics after the American knocked Tsitsipas out of Wimbledon this summer in the first round, a stunning upset.
"There wasn't that same fighting spirit that I usually put out on the court," Tsitsipas told reporters following that loss. "I would like to see a different me next time. There have been times that I was much more motivated than this. But that's no reason for me not to play well."
He brought the fighting spirit Tuesday, however.
He now heads to the round of 16, where he awaits Ugo Humbert of France.
Tiafoe wasn't the only American to taste defeat Tuesday, as Giron dropped a heartbreaker to Nishikori in three sets.
Giron lost a first-set tiebreak before bouncing back to win the second, however, he clearly had little left in the tank in the third, losing 6-1.
The 31-year-old Nishikori, who was a U.S. Open finalist in 2014, tweeted the following after his victory:
Kei Nishikori @keinishikori
Happy! 🇯🇵🇯🇵🇯🇵<a href="https://twitter.com/Olympics?ref_src=twsrc%5Etfw">@Olympics</a> <a href="https://twitter.com/Tokyo2020?ref_src=twsrc%5Etfw">@Tokyo2020</a> <a href="https://t.co/Wv9PNgfSoY">https://t.co/Wv9PNgfSoY</a> <a href="https://t.co/jtTMbz7OhG">pic.twitter.com/jtTMbz7OhG</a>
Nishikori will have a golden opportunity to reach the quarterfinals, as he faces the unheralded Ilya Ivashka of Belarus in the third round.
The biggest upset of the day in men's singles came courtesy of Great Britain's Liam Broady, who knocked off seventh-seeded Hurbert Hurkacz of Poland in three sets.
Tennis coach and the mother of veteran Great Britain player Andy Murray, Judy Murray, tweeted about Broady's big win:
The victory was an unexpected one, as most figured Hurkacz was ticketed for a deep Olympic run after upsetting Roger Federer at Wimbledon.
Broady has a strong chance to reach the quarters, as his next match is against another unseeded player in Frenchman Jeremy Chardy.
Chardy scored an upset in his own right Tuesday, beating 11th-seed Aslan Karatsev in three sets.