LONDON (Reuters) - Highlights from day two of the Wimbledon championships on Tuesday (times GMT):
Two-time champion Petra Kvitova was broken three times in the decider when she was beaten 6-4 4-6 6-0 defeat by world number 50 Aliaksandra Sasnovich of Belarus.
The Czech committed 36 unforced errors as she lost an opening-round match at Wimbledon for the first time since 2009.
Seventh-seeded Austrian Dominic Thiem retired injured from his first-round match, trailing 6-4 7-5 2-0 to Marcos Baghdatis.
Australian Matthew Ebden claimed his first victory over a top-10 opponent at a Grand Slam, beating 10th seed David Goffin of Belgium 6-4 6-3 6-4 in the opening round.
Second seed Rafael Nadal booked a second-round spot at Wimbledon for the 12th time by beating Israel’s Dudi Sela 6-3 6-3 6-2.
Nadal is bidding to win the French Open and Wimbledon in the same year for the third time and equal Bjorn Borg’s all-time record of three back-to-back titles in Paris and London.
“Room to improve, but after a while without playing on grass it’s very important to start with a straight victory,” the 32-year-old Spaniard said.
“It’s not easy, especially here on grass. The important thing is to be through, I prefer to win in straight sets than in five. Every victory gives you confidence, it doesn’t matter how you win.”
Australian Nick Kyrgios fired 42 aces on his way to a 7-6(3) 7-6(4) 6-7(5) 6-3 victory over Uzbekistan’s Denis Istomin.
Argentine Juan Martin del Potro is ready to adapt to a 25-second serve clock as he thinks it is a great opportunity to cut down on time between points.
“They are trying to make us faster,” he told reporters.
“I think if this changes work for the fans, for the television, and for us as well, it could be a good opportunity to improve our game, too. We are trying to adapt to these kind of things.”
Fifth seed Del Potro eased to a 6-3 6-4 6-3 win over German Peter Gojowczyk.
Fourth seed Alexander Zverev won 15 of the last 17 games to see off Australian James Duckworth 7-5 6-2 6-0.
Zverev recorded his best Wimbledon performance last year by reaching the round of 16.
British number one Kyle Edmund beat Australian Alex Bolt 6-2 6-3 7-5 to reach the second round for a second consecutive year.
Edmund was pleased to wrap up the win in less than two hours and now hopes England could put away Colombia in the World Cup last 16 later on Tuesday.
“Everyone can get off to watch the England match tonight,” he said.
“You’ve got to be positive. I’m positive for the guys today. The way they played in the group stages, it’s anyone’s tournament. All the best to England.”
Defending champion Garbine Muguruza booked a place in the second round with a 6-2 7-5 victory over British wildcard Naomi Broady.
Japan’s Kei Nishikori overcame a mid-match blip to beat American qualifier Christian Harrison 6-2 4-6 7-6(3) 6-2.
Up next for the 24th seed is Australian Bernard Tomic, who ousted Poland’s Hubert Hurkacz in the opening round.
Fifth seed Juan Martin del Potro fired 22 aces on his way to a 6-3 6-4 6-3 win over German Peter Gojowczyk.
The big-hitting Argentine’s best performance at Wimbledon came in 2013, when he reached the semi-finals.
British number one Johanna Konta was made to work hard for a 7-5 7-6(7) victory over Russian youngster Natalia Vikhlyantseva.
Konta last year became the first British woman to reach the Wimbledon semi-finals since 1978.
“First rounds are always tricky,” she said. “Both players are trying to find their footing.
“I’m playing this championship independent of what happened last year. Last year gave me memories and valuable experience, but I’m older and a little wiser.”
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Spain’s Feliciano Lopez, making a record 66th consecutive Grand Slam appearance, reached the second round with a 6-3 6-4 6-2 win over Argentine Federico Delbonis.
Australia’s Daria Gavrilova, seeded 26th, did not face a single break point in a convincing 6-2 6-3 victory over American qualifier Caroline Dolehide.
Gavrilova’s compatriot Ashleigh Barty finished with 33 winners as she defeated Swiss Stefanie Voegele 7-5 6-3.
Reporting by Hardik Vyas in Bengaluru,; Editing by Ed Osmond and Clare Fallon