Melbourne: Serena Williams gave compatriot Nicole Gibbs a lesson in Grand Slam tennis with a 6-1, 6-3 thrashing to reach the fourth round of the Australian Open on Saturday.
Having passed her earlier tests against more accomplished players, Serena had far too many weapons for the 92nd-ranked Gibbs, who appeared overawed by the occasion on a sun-drenched Rod Laver Arena.
Serena suffered a brief lapse when serving for the match at 5-2 and was broken for the first time, but she promptly broke back to close out the one-sided contest in just over an hour.
Serena next faces Czech 16th seed Barbora Strycova for a place in the quarterfinals.
Earlier, Ekaterina Makarova continued to show little regard for seeds at the Australian Open and sent another one heading for the exits at Melbourne Park with a 6-2, 6-7(3), 6-3 win over sixth seed Dominika Cibulkova in the third round.
The 28-year-old, whose list of high-seeded victims at previous Australian Opens includes Ana Ivanovic (19th), Serena Williams (12th), Angelique Kerber (5th) and Simona Halep (3rd), will now face Johanna Konta.
Britain's Konta, seeded ninth, won nine games in a row to see off Danish 17th seed Caroline Wozniacki 6-3, 6-1.
Read also: Sania-Strycova advance; Bopanna-Cuevas bow out
Makarova, who despite her giant-killing exploits has only reached one semifinal at Melbourne Park (2015), raced through the first set courtesy of three breaks and then into a 4-0 lead in the second.
Cibulkova, however, fought back to win the next five games to take a 5-4 lead then went on to force a deciding set.
Makarova took a medical time out for treatment on her right elbow while leading 3-2 in the third, but it did not see the momentum swing back Cibulkova. The Russian then broke to take a 5-3 lead and served out in the next game.