PARIS — Serena Williams waited a day to play, then won before lunch at the French Open today.

Rafael Nadal also went to work early and clocked out quickly.

With almost mistake-free tennis, the top-ranked Williams won nine consecutive games and advanced to the third round by beating Julia Goerges 6-1, 6-1.

Four-time champion Nadal lost serve only once and beat Horacio Zeballos 6-2, 6-2, 6-3.

A schedule backlog caused by rain forced Nadal and Williams to wait until the sixth day of the tournament for their second-round matches. They took the court on a sunny, cool morning and engaged in brisk workouts.

Williams won in 55 minutes and said such a rout can help her in later matches.

"I can learn a lot, like, 'OK, what am I doing today? How can I get them to all be like that?"' she said. "Those are the questions that I ask and I try to answer."

Nadal won in 1 hour, 45 minutes. He has lost only 13 games through two rounds.

Four-time champion Justine Henin needed just four games to advance. In the completion of a suspended match, she beat Klara Zakopalova 6-3, 6-3. Play was stopped Thursday because of darkness with Henin leading 3-2 in the second set.

Two-time semifinalist Novak Djokovic overcame nine double-faults to beat Kei Nishikori 6-1, 6-4, 6-4.

Williams, bidding for her first title at Roland Garros since 2002, played aggressively and still committed only four unforced errors to 20 for Goerges. Williams often moved two steps inside the baseline to smack returns, and she won 15 of 19 points on Goerges' weak second serves.

Nadal won with steady play from the baseline, committing only 12 unforced errors, and he also won 16 points at the net.

Seeded second, Nadal improved to 33-1 at Roland Garros, with his lone loss a fourth-round upset against Robin Soderling in 2009.

In women's play, qualifier Anastasia Pivovarova, ranked 187th, upset No. 25-seeded Zheng Jie 6-4, 6-3. Unseeded American Jill Craybas lost to No. 29 Anastasia Pavlyuchenkova 6-4, 6-1.

Andy Murray's second-round match took two days to complete and was interrupted again after resuming Thursday, but he was pleased to beat the darkness and Juan Ignacio Chela 6-2, 6-7 (5), 6-3, 6-2.