The Latest: You snooze, you lose: Dimitrov OK with timing

The No. 15-seeded Dimitrov beat No. 18 Richard Gasquet in straight sets and finished the third-round match at precisely 2 a.m.

U.S. Open runner-up Karolina Pliskova rallied from 5-1 down in the third set to beat Jelena Ostapenko 4-6, 6-0, 10-8 and reach the fourth round of the Australian Open for the first time.

In another third-round match, Simon's French Davis Cup teammate Gael Monfils, the U.S. Open semifinalist, beat Philipp Kohlschreiber 6-3, 7-6 (1), 6-4.

The secret to Denis Istomin's winning streak in five-setters at the Australian Open?

Istomin, a wild-card entry from Uzbekistan, backed up his shocking upset win over six-time champion Novak Djokovic in the second round with another five-set victory on over 30th-seeded Pablo Carreno Busta.

Nadal broke Zverev's serve in the opening game of the final set, lost his own serve, and then broke back in the fifth game to advance to a Round of 16 match against the winner of a later match between Philipp Kohlschreiber and Gael Monfils.

[...] Nadal, who had two lengthy injury spells last year, settled into the match and dominated after losing the third-set tiebreaker.

Denis Istomin has followed his upset win over defending champion Novak Djokovic with a 6-4, 4-6, 6-4, 4-6, 6-2 win over Pablo Carreno Busta, reaching the fourth round of the Australian Open.

On Thursday, Istoman, a wild-card entry from Uzbekistan, became the lowest-ranked player — at 117 — to beat a second-seeded player at the Australian Open.

Hingis won five Grand Slam doubles titles after returning as a full-time doubles player in 2013, including three in row from Wimbledon 2015 to last year's Australian Open with Sania Mirza.

Wozniacki had come into the match in strong form, failing to drop a set in her first two matches and losing only seven games.

Serena Williams' 17th appearance at the Australian Open remains on track — the 22-time Grand Slam singles champion beat fellow American Nico