LONDON -- Defending champion Petra Kvitova keeps steamrolling opponents at Wimbledon.
The Czech player joined the growing list of favorites to earn straight-forward victories in the second round by beating Kurumi Nara of Japan 6-2, 6-0 in less than an hour on Court 1 on Thursday.
Kvitova has dropped just three games in two matches so far after beating Kiki Bertens 6-1, 6-0 in the first round.
Caroline Wozniacki was among the favorites to advance, but her victory wasn't as convincing as she made things a bit difficult for herself during a 6-1, 7-6 (6) victory over Denisa Allertova of the Czech Republic.
The fifth-seeded Wozniacki looked headed for a routine victory when leading 5-1 in the second set but was broken twice when serving for the match. She finally converted her second match point in the tiebreaker with a backhand volley winner.
"All of a sudden it's 5-6 instead of comfortably in the locker room having won the match," Wozniacki said. "In the end of the day, I won. I kept fighting. That's tennis sometimes."
The former No. 1 hasn't had much success at Wimbledon, where she has never made it past the fourth round.
Former finalist Agnieszka Radwanska needed just 49 minutes to win her second-round match against Australia's Ajla Tomljanovic 6-0, 6-2 on Court 2.
Radwanska, the No. 13 seed who lost the 2012 final to Serena Williams, was broken when serving for the match at 5-1, but broke right back at love to seal the win.
Former finalist Sabine Lisicki came from a set and a break down to beat Christina McHale of the United States 2-6, 7-5, 6-1 on Centre Court. The 18th-seeded German, who was runner-up in 2013, was broken in the opening game of the second set but turned things around by breaking right back and then won the last five games of the decider, closing the match out with a backhand winner.
Two seeded women were eliminated in early matches: No. 8 Ekaterina Makarova of Russia fell 6-2, 7-5 to Magdalena Rybarikova of Slovakia, while No. 25 Alize Cornet of France was ousted by Olga Govortsova of Belarus 7-6 (6), 2-6, 6-1.
Women advancing to the third round included No. 10 Angelique Kerber, No. 15 Timea Bacsinszky, No. 20 Garbine Muguruza and No. 31 Camila Giorgi.
After the hottest day on record in Wimbledon history on Wednesday, temperatures were cooler and a light drizzle forced a 45-minute delay to the start of play on the outside courts.
The Associated Press contributed to this report.