Glamorgan's batsmen backed up the earlier efforts of their bowlers to put them in complete control against Leicestershire in Division Two of the LV= County Championship.
Having skittled the visitors for just 109 at Sophia Gardens on Sunday, the Welsh county managed to pick up maximum batting points before eventually declaring their first innings on 350-8.
Jacques Rudolph top-scored with 88, sharing a partnership worth 73 with Will Bragg (21) for the second wicket before then adding a further 61 in combination with Ben Wright (36).
Chris Cooke weighed in with 58 as he and Jim Allenby, who followed up his three wickets on day one with 44, helped Glamorgan open up a 241-run lead by the time skipper Mark Wallace declared. The decision reaped immediate dividends, Leicestershire losing Greg Smith to close on 6-1.
Elsewhere, Arun Harinath struck a patient 63 as Surrey trailed by just 24 runs when rain brought an early end to the second day of their clash with Essex.
The opener, drafted in to replace the injured Graeme Smith at the top of the order, faced 231 balls and was at the crease for over four hours to help the visitors reach 204-6.
Harinath put on 71 with Zafar Ansari (39) against a depleted Essex attack that had to rely on the part-time spin of Tom Westley to eventually get a breakthrough on the second morning at Chelmsford.
Steven Davies, who has taken a break from keeping wicket to focus on his batting, made an unbeaten 36 to carry Surrey closer to their opponents' score of 228, while Rory Burns - dropped twice before he reached double figures - contributed 25. No play was possible after tea.
Just 14.1 overs were possible at Tunbridge Wells, with Worcestershire reaching 48 without loss in reply to a first-innings total of 258 from Kent.
Skipper Daryl Mitchell was unbeaten on 24 while Matt Pardoe had reached 20 not out by the time the players were forced off the field just short of an hour into the first session. A scheduled 1.50pm restart was duly scuppered by the wet conditions, with play then called off at around 4pm.
It was an equally frustrating day at Derby, with the hosts recovering from their overnight position of 166-6 to make 278 against Gloucestershire, who then reached 21-0 from eight overs.
Scott Elstone and David Wainwright both hit valuable half-centuries for the hosts, the duo extending their seventh-wicket stand to 70 before Will Gidman had former lbw for 63.
However Wainwright was able to steer Derbyshire to two batting bonus points with help from the tail, the former Yorkshire spinner finishing up unbeaten on 54 from 122 deliveries.
Gidman and Benny Howell both claimed four wickets apiece for Gloucestershire, who saw captain Michael Klinger (12 no) and Chris Dent (8 no) survive eight overs up until rain arrived to cut short proceedings.