MELBOURNE, Australia — 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.

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.