Williams defeated Dutch tennis player Arantxa Rus in the first round of competition at Wimbledon on Monday and said it "felt good" to be back competing again. Not wasting too much energy in the first matches is nice to have.
Federer's longest streak of sets won at Wimbledon was 34 between the third round in 2005 to the 2006 final.
With flying ants stuck in Wozniacki's hair and dive-bombing her throughout the match, the former world number one asked the umpire if there was something that could be sprayed to keep the bugs away.
"I'm not surprised how impressive she has looked because she is obviously very easy to train", Wilander, who is presenting Eurosport's Game, Schett and Mats, told Reuters. "For my body, it didn't work, no matter how much I worked out, no matter how much I did".
Sam Querrey, the 11th seed, stepped up his bid to emulate last year's run to the semi-finals with a 7-6 (7-4) 6-3 6-3 win against Ukraine's Sergiy Stakhovsky.
The top-seeded Federer defeated Slovakian challenger Lukas Lacko in three straight sets to move on, while Williams cruised past Bulgaria's Viktoriya Tomova. "Sometimes your serve matches up better against certain players".
Azarenka, who had her son Leo in December 2016, says she fits her training in around his naps and thinks that as he gets older he will be able to come to more practice sessions with her.
United States player Serena Williams celebrates winning against Bulgaria´s Viktoriya Tomova during their women´s singles second round match on the third day of the 2018 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 4, 2018.
A year ago, Buzarnescu was ranked 213 and lost in Wimbledon qualifying - yet now she will face Czech seventh seed Karolina Pliskova for a place in the last 16. I literally sat Olympia in my arms, I talked to her, we prayed about it.