County Championship Division Two, Cheltenham College, day three (stumps): Glamorgan 647-7 dec v Gloucestershire 443 & 30-2 Evergreen Glamorgan skipper Robert Croft captured six wickets as Gloucestershire were forced to follow on and closed 174 behind at 30-2.
Centuries from Kiwis Craig Spearman and Hamish Marshall looked to have put the home side in safe position at 373-3 in search of 498 to save the follow-on.
But Croft took 6-120, including the last five wickets for 28 in 12.2 overs as Gloucester were bowled out for 443.
Key man Spearman then fell again second time around for only seven.
Dean Cosker who struck first when Gloucestershire batted again, pinning
Spearman lbw with his first delivery in the fifth over of the innings.
Croft then had nightwatchman Martyn Ball brilliantly caught by Ryan Watkins at short-leg.