Melbourne, Australia ? Caroline Wozniacki moved into the Australian Open quarterfinals with a 6-3, 6-4 win over Anastasija Sevastova today and is just one victory from ensuring she’ll retain the top ranking.

The 20-year-old Dane, playing her first major as world No. 1, reached the quarterfinals at Melbourne Park for the first time. She can keep her top ranking with an appearance in the semis.

Novak Djokovic advanced to the quarterfinals for the 13th time in his last 15 majors with a 6-3, 6-4, 6-0 victory over No. 14 Nicolas Almagro.

Rafael Nadal kept his bid for a “Rafa Slam” on track and ended Australia’s last hope in the tournament, with a 6-2, 7-5, 6-3 win over 18-year-old wild card Bernard Tomic in the third round.

College football

2 OU players arrested

Norman, Okla. — Two University of Oklahoma football players have been arrested, one on a complaint of driving under the influence and another on a municipal violation in Norman.

Police Lt. Lance Arnold said Kenneth Stills was arrested at 2:10 a.m. Saturday on a DUI complaint near campus. Arnold said Tony Jefferson was taken into custody on a complaint of interfering with official process at the same location about 2:30 a.m.