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Sharapova, Radwanska advance at Australian Open

Melbourne, Australia (SportsNetwork.com) - Maria Sharapova had a bit of an easier time in cooler conditions Saturday at the Australian Open.

Agnieszka Radwanska, meanwhile, had a bumpier road.

Sharapova, the No. 3 seed, defeated 25th-seeded Alize Cornet 6-1, 7-6 (8-6) and fifth-seeded Radwanska rallied to top 29th-seeded Anastasia Pavlyuchenkova 5-7, 6-2, 6-2 in third-round action.

The 2008 champion, Sharapova, didn't record an ace, but won 70 percent of her first-serve points and had a 35-11 advantage in winners. She had a 5-3 lead in the second set before Cornet rallied to force the tiebreaker.

On Thursday, Sharapova outlasted Italy's Karin Knapp 6-3, 4-6, 10-8 in a 3 1/2-hour marathon match that was played in sweltering heat before the roof was closed at Rod Laver Arena.

Radwanska fell behind 0-2 in the second set but captured 12 of the last 14 games to win the match. Pavlyuchenkova had a 39-25 edge in winners but committed 49 unforced errors compared to 19 for Radwanska.

Pavlyuchenkova had her vitals checked after Radwanska went up 5-2 in the second.

The biggest upset of the day came when Garbine Muguruza vanquished the 10th- seeded Caroline Wozniacki 4-6, 7-5, 6-3. Fresh off her first-ever WTA title in Hobart last week, Muguruza won 7-of-10 break points.

The temperatures over the first four days reached well over 100 degrees as Melbourne was in the midst of a prolonged heat wave. The searing heat suspended play Thursday. Many players wore ice vests between breaks to stay cool.

However, the temperatures began to fall Friday night and by Saturday it was in the 70s.

In other completed matches Saturday, No. 8 seed Jelena Jankovic downed Kurumi Nara 6-4, 7-5, No. 20 seed Dominika Cibulkova made quick work of 16th-seeded Carla Suarez Navarro 6-1, 6-0, 13th-seeded American Sloane Stephens beat Elina Svitolina 7-5, 6-4 and 11th-seeded Simona Halep was a 6-1, 6-4 victor over Zarina Diyas.

01/18 02:14:57 ET