Wicket-keeper Tom Cullen took five catches as Glamorgan bowled out Worcestershire for 271 on day one of their LV= County Championship clash at New Road.
Australian seamer Michael Neser was the pick of the bowlers with 3/40, while Michael Hogan took 2/44 and in the process picked up his 900th wicket in professional cricket.
"The guys bowled beautifully this morning, to have them five for 60-odd was a great effort but they got away from us a bit in the afternoon session as we would have liked to have kept them under 250," said Cullen.
"For us it's about limiting the damage with the new ball in the morning, and as it gets softer and the wicket a bit flatter, hopefully we can make hay in the afternoon.
"There's a lot of pace in the wicket and a bit of movement with the new ball, it's a pretty good pitch.
"I'd have been disappointed not to take any of those five catches, the bowlers bowled pretty well and I did my job."