Teenager Jack Draper gained a shock win over Cameron Norrie on the second day of the Battle of the Brits in Roehampton.
Draper, 18, ranked 303rd in the world, triumphed 7-6 (7-5) 7-6 (7-4) against world number 71 Norrie at the National Tennis Centre.
British number one Dan Evans bounced back from Sunday's loss to Andy Murray by beating Jan Choinski 7-5 6-0.
Heather Watson eased past Jodie Burrage 6-1 6-4 in the women's competition.
Elsewhere, Emma Raducanu defeated Katy Dunne 6-1 6-4, Beth Grey won 6-2 6-2 against Naomi Broady, and Eden Silva beat Alicia Barnett 6-2 2-6 10-7.