The latest from the Australian Open on Saturday (all times local):
Johanna Konta has moved into the fourth round at Melbourne Park with a 6-3, 6-1 win over former No. 1 Caroline Wozniacki at Margaret Court Arena.
Konta, who made a surprise run to the semifinals at Melbourne Park last year, broke Wozniacki in the final game of the opening set.
Wozniacki then made life difficult for herself by double-faulting on break point to give Konta a 2-0 lead in the second.
Although Konta double-faulted on her first match point, she clinched it two points later when Wozniacki hit a backhand wide.
Wozniacki had come into the match in strong form, failing to drop a set in her first two matches and losing only seven games.
Konta will next face Ekaterina Makarova in the Round of 16.
Serena Williams' 17th appearance at the Australian Open remains on track — the 22-time Grand Slam singles champion beat fellow American Nicole Gibbs 6-1, 6-3 at Rod Laver Arena.
The 23-year-old Gibbs, making her 12th appearance overall at any major, had two game points at 1-1 in the second set, but allowed Williams to come back and break her serve.
Williams was broken at 5-2 while serving for the match, but did the same to Gibbs in the next game to complete the win in 63 minutes.
The six-time Australian Open champion advanced to the fourth round for the sixth year in a row since not playing here in 2011 due to a foot injury.
Aiming for a record 23rd Grand Slam singles title, Williams will next play Barbora Strycova, who beat Caroline Garcia in straight sets.
Mirjana Lucic-Baroni has continued her unlikely run at the Australian Open with a 3-6, 6-2, 6-3 win over Maria Sakkari of Greece to advance to the Round of 16.
Before this week, the 34-year-old Lucic-Baroni hadn't won a match at Melbourne Park since her debut at the tournament in 1998. The 19-year gap in between match wins at a Grand Slam tournament broke the record set by Kimiko Date-Krumm, who went 17 years between match wins at Wimbledon.
Lucic-Baroni was a former tennis prodigy who reached the semifinals of Wimbledon in 1999 as a 17-year-old and captured the Australian Open doubles title a year before that with Martina Hingis.
She next plays American Jennifer Brady, a qualifier ranked No. 116, for a chance to reach her first Grand Slam quarterfinal since her run at the All England Club 17 years ago.
Ekaterina Makarova didn't make it easy on herself, blowing a one-set, 4-0 lead over Dominika Cibulkova, but the Russian player advanced to the fourth round at the Australian Open with a 6-2, 6-7 (3), 6-3 win. After taking a medical timeout for an injured right elbow in the third set, the 2015 Australian Open semifinalist broke Cibulkova's serve in the eighth game to take a 5-3 lead, then held to win the match in 2 hours, 54 minutes.
Makarova won the last two games of the first set and the first four of the second. But Cibulkova, who had never lost to Makarova in three previous matches, won five games in a row to change the momentum of the game.
"An amazing fight. I got, to be honest, a bit tight at 4-0 in the second set," Makarova said. "I want to enjoy my win today. It's my first over Dominika, and she's a great player."
Makarova will play either 2016 semifinalist Johanna Konta or former No. 1-ranked Caroline Wozniacki.
U.S. qualifier Jennifer Brady has advanced to the fourth round of the Australian Open with a 7-6 (4), 6-2 win over 14th-seeded Elena Vesnina.
It is the 21-year-old Brady's first appearance in the main draw of a Grand Slam tournament after she qualified in her first attempt at Melbourne Park. She had failed in previous attempts to qualify for the U.S. Open (three times) and Wimbledon and the French Open last year.
Brady will next play either Maria Sakkari or Mirjana Lucic-Baroni in the Round of 16.
No. 16-seeded Barbora Strycova beat No. 21 Caroline Garcia 6-2, 7-5 to reach the fourth round, where she'll meet either Serena Williams or Nicole Gibbs.
Serena Williams continues her quest for a 23rd Grand Slam singles title while Rafael Nadal and Milos Raonic also attempt to advance to the fourth round on Saturday at the Australian Open.
Under sunny skies and temperatures of around 20 degrees Celsius (68 Fahrenheit), Ekaterina Makarova and Dominika Cibulkova opened play at Rod Laver Arena. Williams' match was set to follow on the same court, with Nadal taking on Alexander Zverev in the last match of the afternoon there.
Raonic was scheduled to play Gilles Simon at Hisense Arena.
Nadal and Raonic are both in the same half of the draw as the beaten Novak Djokovic, who lost in the second round. The man who defeated him, Denis Istomin, was set to play his third-round match on Show Court 2.