Andy Murray and Johanna Konta both won on Centre Court as four British players reached the third round at Wimbledon for the first time in 20 years.
Konta won a gripping encounter against Croatia's Donna Vekic 7-6 (7-4) 4-6 10-8 in three hours and 10 minutes.
Murray, the world number one, then beat Dustin Brown of Germany 6-3 6-2 6-2.
Heather Watson saw off Latvian 18th seed Anastasija Sevastova 6-0 6-4, and Aljaz Bedene beat Damir Dzumhur of Bosnia and Herzegovina 6-3 3-6 6-3 6-3.
It is the first time since Tim Henman, Mark Petchey, Greg Rusedski, Andrew Richardson and Karen Cross made the third round in 1997 that at least four Britons have reached that stage.