Pace bowler Mike Reed registered his maiden County Championship five-wicket haul as Glamorgan had much the better of the first day of their Division Two clash against Worcestershire at the SWALEC Stadium.
Reed, 24, claimed 5-27 in 15.5 overs with Worcestershire bowled out for only 123 in their first innings. Skipper Daryl Mitchell and Moeen Ali top-scored with 20 apiece. Reed's fellow seamer Michael Hogan also recorded figures of 4-33.
In reply Glamorgan's openers - Ben Wright and Will Bragg - only faced 13 balls between them for no score before bad light stopped play with only 65.2 overs possible on the opening day.
Hogan and Reed went through the top order to reduce Worcestershire to 59-5 by lunch - losing four wickets for only five runs.
Australian Hogan claimed the first wicket of the day in the seventh over when opener Matthew Pardoe was caught at leg slip by Wright.
Worcestershire looked like they had weathered the early storm reaching 55-1 before losing four wickets in the space of 3.5 overs before lunch. Mitchell went edging a ball from Reed to Stewart Walters at second slip before Sri Lanka's Thilan Samaraweera went for a duck trapped leg before by Hogan.
With their backs up Glamorgan took two more wickets in successive overs with Wright claiming a second catch at leg slip to dismiss Ali to give the impressive Hogan his third victim. Three balls later Reed had Alexei Kervezee leg before for two as Worcestershire lost four wickets in four overs with only five runs added.
Glamorgan's bowlers did not stop there. Reed claimed his third wicket after lunch bowling wicketkeeper Michael Johnson, while the medium pace of Jim Allenby bowled Neil Pinner as Worcestershire were reduced to 85-7.
Hogan bowled Gareth Andrew for nine before Dean Cosker caught David Lucas in the gully to give Reed his fourth victim as Worcestershire struggled to 102-9 and Reed rounded off a fine five-wicket haul after bowling Chris Russell.