(AP Photo/Rob Griffith)
MELBOURNE, Australia (AP) Serena Williams avenged her heaviest Grand Slam defeat with a comeback 2-6, 6-3, 6-2 win over Garbine Muguruza on Monday to reach the Australian Open quarterfinals.
The top-ranked Williams was pushed all the way by No. 24-seeded Muguruza, who matched her in the heavy-hitting rallies, and who had conceded only four games to her in a second-round upset last year at the French Open.
Five-time Australian Open winner Williams next faces Dominika Cibulkova, who reproduced the kind of tennis that helped her reach the final here last year as she beat two-time champion Victoria Azarenka 6-2, 3-6, 6-3.