Wimbledon 2015: Roger Federer beats Sam Querrey in three sets
|Venue: All England Club Dates: 29 June - 12 July|
|Play: Outside courts 12:15 BST; Centre Court and Court One 13:00 BST|
|BBC coverage: Across TV, radio and online with up to 15 live streams available. Read More: TV and radio schedules.|
Roger Federer accelerated into Wimbledon's last 32 with a commanding 6-4 6-2 6-2 win over Sam Querrey.
Federer, 33, is going for a record eighth title and the second seed took just one hour 25 minutes to sweep past the American world number 36.
The Swiss will next play Sam Groth of Australia and could meet British number one Andy Murray in the semi-finals.
The 13th seed Jo-Wilfried Tsonga, sixth seed Tomas Berdych and 18th seed Gael Monfils are also through.
Tsonga of France beat Spaniard Albert Ramos 6-3 6-4 6-4, Berdych beat Frenchman Nicolas Mahut 6-1 6-4 and Monfils, also of France, was a 7-6 (7-5) 6-3 7-5 winner over compatriot Adrian Mannarin.
Rafael Nadal, the Spanish 10th seed, suffered a shock 7-5 3-6 6-4 6-4 loss to Dustin Brown of Germany in the day's final match on Centre Court.
Number two seed Federer has yet to drop a set in his first two matches at the All England Club and he defeated Querrey - who took Tsonga to five sets at the same stage last year - in straightforward, serene style.
The most recent of his record 17 Grand Slam titles came at Wimbledon with victory over Murray in the 2012 final.
The highlight of Federer's one-sided win was the audacious shot executed from behind his own baseline, slipping the racket between his legs to direct the ball over the head of the stranded Querrey.
"It's rare that those shots happen so when they do you have to pull them off. If you don't win the point you do look a little bit silly," Federer said.
"It was the perfect shot, I even had a little bit of time which allowed me to get into position. It just felt like I had time."
He is on course to become the first man to win eight Wimbledon titles, but tougher challenges await in the draw than Querrey.
"I'm very happy with the way I've played in the first two matches," Federer said.
"I've been playing well this season and have had a good run. There's a little relief that I'm actually playing well here at Wimbledon as well.
"I had to work hard, Sam's a good player. The first set was tough and he was serving well and I didn't know how long he'd keep that up for."
Ivo Karlovic beat the fading light and Alexandr Dolgopolov to advance after a marathon five-setter at Wimbledon.
The hard-serving Croat hit 53 aces in beating the Ukrainian 5-7, 6-3, 6-4, 6-7 (7-44), 13-11 to reach the third round at the All England Club.
It was the last match to finish for the day, shortly before play would have had to be suspended because of bad light. His ensured the entire second round was completed on schedule.
Karlovic will next face Jo-Wilfried Tsonga of France in the third round Saturday.