Glamorgan captain Kiran Carlson steered his side to a long-awaited win over Surrey in the Rothesay County Championship in Cardiff.
Their seven-wicket win was the Welsh side's first red-ball success against their opponents on home soil since 1983 and dealt Surrey their second defeat of the season.
Tom Lawes reached 66 not out as Surrey added a creditable 49 to their overnight total to set Glamorgan 195 to win.
The hosts struggled to assert themselves, with Billy Root run out after just four balls, but Carlson steadied the Welsh side with a fine 67 before Colin Ingram and Sean Dickson combined to ease them home.
Captain Craig Overton completed his third century of the season but Somerset's clash with Warwickshire petered out to a draw in Taunton.
Resuming on 219 with four second-innings wickets in hand, Overton and Thomas Rew extended their seventh-wicket stand to 233 before Somerset were bowled out for 435 to lead by 313.
Warwickshire's hopes of pressuring that target were dashed by the early losses of Zen Malik and Dan Mousley, and they were stranded on 98 for two when play was abandoned shortly before 5pm due to rain.
In Division Two, Durham produced a sterling batting display to turn a likely draw into a six-wicket win over promotion rivals Northamptonshire at Chester-le-Street.
The visitors added 50 to their overnight total to set the hosts 296 to win. Durham set about their task with aplomb, Daniel Bedingham's 109 not out and an unbeaten 65 from Colin Ackermann easing them home in emphatic fashion.
Fateh Singh took career-best figures of five for 74 as hosts Worcestershire also turned a match that seemed certain to be heading for a draw into a dramatic five-wicket victory over Gloucestershire.
Fourteen wickets fell on Monday as Worcestershire, resuming on 59 for one, bowled out their opponents for 185 to set themselves a mere 87 to snatch victory.
The hosts wobbled, with Daniel Lategan departing to a third-ball duck and Graeme van Buuren finishing with four for 36 but it was all in vain as Worcestershire limped over the line for the loss of five wickets.
Kent beat Middlesex by 49 runs at Canterbury with Matt Milnes finishing with five for 31 in the second innings as the visitors, set a feasible 231 to win, crumbled to 181 all out.
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