Glamorgan coach Toby Radford said his team were disappointed after defeat to Surrey in the T20 Blast but will come back fighting against Hampshire.
Surrey won by 17 runs after posting 165-5 at the Swalec Stadium with Glamorgan managing 148-8 in reply.
Glamorgan have slipped to fourth in the South Group, one place below Surrey.
"We will be disappointed but we don't want to get too hard on ourselves... you've got to come back fighting next Wednesday," Radford said.
Surrey were put into bat and Hashim Amla (55) and Kevin O'Brien (40 not out) helped them on their way to victory while Glamorgan captain Jim Allenby (52) and Stewart Walters (35) were top scorers for the hosts.
Glamorgan are currently in action against Gloucestershire in the LV County Championship, but their next chance to respond in the short format of the game comes with a home fixture against Hampshire on Wednesday, 25 June.
"That's a big game [on Wednesday] ,a televised game so everyone will want to come up and put tonight right," said Radford.