LONDON (AP) — Roger Federer's nearly perfect serving carried him back to the Wimbledon quarterfinals.
He'll try to continue his bid for a record eighth championship at the All England Club by beating his friend and countryman Stan Wawrinka on Wednesday.
Federer won all 54 service games through his first four matches in the tournament, saving eight break points.
That included saving the only break point he faced in a 6-1, 6-4, 6-4 victory over No. 23 Tommy Robredo in the fourth round Tuesday. In the second set, Federer won all 20 points he served.
"Now I'm confident again and not fighting with any confidence issues, which is huge in sporting terms," said Federer, who lost in the second round at Wimbledon a year ago. "I'm happy I got through the first rounds here rather comfortably."
Here are five other things to look for at Wimbledon on Wednesday:
STAN THE MAN: Wawrinka has lost 13 of 15 career matches against Federer, but 14 of those encounters came before the player who wears T-shirts saying "Stan the Man" won his first Grand Slam title at the Australian Open in January. In their most recent matchup, in the final of the Monte Carlo Masters on clay in April, Wawrinka won. "It's going to give me a lot of confidence about myself, knowing that I can beat him," Wawrinka said. "Doesn't matter where." They've been pals for years and paired up to win a gold medal in doubles for Switzerland at the 2008 Beijing Olympics.
PAST CHAMPS: Federer isn't the only previous Wimbledon winner still around. Last year's champion, Andy Murray, and the 2011 champion, Novak Djokovic, face far-less-accomplished opponents Wednesday. Murray takes on 11th-seeded Grigor Dimitrov, who will be playing in his second career Grand Slam quarterfinal. Djokovic faces No. 26 Marin Cilic, who is in the Wimbledon quarters for the first time, although he did get to the semifinals of the Australian Open in 2010.