Mark Ramprakash scored yet another century - his second in four Friends Provident matches this season, to go with his 133 against Middlesex in his solitary first-class outing of the summer - to set Surrey up for a crushing 164-run victory over Gloucestershire at The Oval. Ramprakash, who came to the crease after the early wicket of Scott Newman, made 121 from 124 balls, with nine fours and three sixes, as Surrey racked up an imposing 306 for 6 in their 50 overs. That always looked like overwhelming Gloucestershire, who lost Kadeer Ali early for 7, then went into freefall after the run-out of Will Porterfield for 42, with their last seven wickets going down for 33.
Rich Pyrah and David Wainwright came to Yorkshire's rescue with an unbeaten ninth-wicket stand of 37, to sneak their side to a thrilling two-wicket victory with four balls remaining against Durham at Headingley. In a low-scoring contest, Pyrah also starred with the ball, taking 3 for 23 in seven overs to restrict Durham to a disappointing 166, in which no-one managed more than Gordon Muchall's 31. In reply, Liam Plunkett trapped Jacques Rudolph lbw with the first ball of Yorkshire's innings, but Joe Sayers anchored the innings with 51 from 109 balls to lift his side back into the ascendancy. However, a collapse of 5 for 30 put Durham back in charge before Pyrah (42 not out) and Wainwright (13 not out) came together to turn the tables once more.
Faf du Plessis cracked 12 fours in a fantastic 112 from 86 balls, as Lancashire moved to the top of Group D with a comprehensive 114-run victory over Derbyshire at Derby. After two early wickets for Graham Wagg, du Plessis launched Lancashire's innings by adding 111 for the third wicket with Tom Smith, who made 59. He was eventually seventh out with the score on 238, but Mark Chilton, who had earlier been forced to retire hurt after being struck on the elbow, returned to boost the total with 32 not out from 27 balls. In reply, Chris Rogers led from the front with 68 from 72 balls, but when he fell at 99 for 3, the innings dribbled away, with Gary Keedy claiming 4 for 31.