Eventually, the physically demanding action proved too much for a fading Andy Murray, and Novak Djokovic pulled away to reach the semifinals for the eighth consecutive year.
After a bad-as-can-be start, dropping the first three games, Serena Williams quickly turned things around and stretched her U.S. Open winning streak to 19 matches to get back to the semifinals.
The match went 4 hours, 15 minutes, and the 10th-seeded Nishikori managed to shake off any lingering exhaustion from his previous victory, which lasted 4:19 and ended at 2:26 a.m. Tuesday, equaling the latest finish in tournament history.
Andy Murray went more than a year between victories over top-10 opponents. Now he needs to make it two in a row.
Gael Monfils beat Grigor Dmitrov 7-5, 7-6 (6), 7-5 on Tuesday to reach the quarterfinals of the U.S. Open for the first time since 2010.
Serena Williams reached her first Grand Slam quarterfinal of the year with a 6-3, 6-3 victory over Kaia Kenepi in the U.S. Open on Monday, keeping her hopes alive for a third straight Flushing Meadows crown.
The top seeds made it look easy on a hot and humid Labor Day.
The sisters are bidding for their 14th Grand Slam doubles title, but first at Flushing Meadows since 2009.
The No. 1-ranked and No. 1-seeded Williams has faced American opponents in all three of her matches this week while extending her overall winning streak at Flushing Meadows to 17.
“Qualifiers” are gaining additional notoriety in the women’s draw.
Ivanovic, who had been having her best season since winning the French Open in 2008, lost to Karolina Pliskova 7-5, 6-4 in the second round Thursday.
Sloane Stephens has carried the burden of being considered the possible successor to top- ranked Serena Williams for a while now. It’s either too much pressure for her, she’s not hungry enough or she doesn’t want it bad enough.
Serena Williams began her bid for a third consecutive U.S. Open title with a 6-3, 6-1 victory over American teen Taylor Townsend on Tuesday night.
This 2014 U.S. Open is all about two of the all-time greats in tennis — Roger Federer and Serena Williams — hoping to win their 18th Grand Slam titles.
It’s the calm before the excitement begins at the Billie Jean King National Tennis Center in Flushing Meadows where 700,000 fans are expected to fill the stands over the next two weeks.