Jacques Rudolph and Anthony McGrath added 121, both hitting half centuries, although Yorkshire were made to sweat for their six-wicket win against Leicestershire, the match coming down to the last ball at Grace Road. Yorkshire began the final over needing seven, but just four singles came from five balls. It left Chris Taylor - only playing because of an injury to Craig White - needing three off the last delivery, and he did it in style with a six off Jim Allenby. Rudolph (56) and McGrath (59) did most of the work after coming to the crease at the same time. In a bizarre incident, Michael Vaughan was run out and Andrew Gale retired hurt off the same ball. Vaughan turned for a second, only to see Gale flat-out with a twisted ankle. Vaughan couldn't beat a direct hit from Jacques du Toit, while Gale also had to leave the field. HD Ackerman anchored Leicestershire innings with 57 off 51 balls, but despite some meaty blows from Dillon du Preez their total wasn't quite enough and they remain winless.
Rob White chose the perfect time to hit his best Twenty20 score as Northamptonshire chased down 171 to beat Gloucestershire at Milton Keynes. White's brilliant 94 off 57 balls, including eight fours and three sixes, ensured Northamptonshire had 10 balls to spare in their chase. Nicky Boje helped him complete the job, although his share of a 110-run stand was just 27. White's hitting took the limelight away from Hamish Marshall's dazzling display after he'd launched 59 off 33 deliveries. Gloucestershire lost Craig Spearman early, forced to retire hurt after a delivery from Johan van der Wath cracked into his helmet causing a cut.
Warwickshire kept themselves in touch near the top of the group with a seven-wicket victory against local rivals Worcestershire at New Road. Jonathan Trott produced a measured innings at the top of the order as Warwickshire reached their target with 10 balls to spare, but Worcestershire didn't help their cause with some sloppy fielding. Despite losing just four wickets, Worcestershire struggled to build momentum during their innings after the initial aggression from Vikram Solanki and Graeme Hick was broken. Solanki continued to a 48-ball 50, but the Warwickshire bowlers did a good job restricting the scoring in the later overs. Spinners Ant Botha and Ian Salisbury proved difficult to attack and Man-of-the Match Neil Carter's four overs went for a miserly 14 runs.
Peter Trego's 79 off 50 balls put Somerset on course for their first Twenty20 win of the season with a 15-run success against Glamorgan at Taunton. Herschelle Gibbs kept the visitors in with a chance, taking Glamorgan to 117 for 1 in the 13th over alongside Robert Croft. But Croft was caught at backward point for a 37-ball 50 and the run chase lost its way. Somerset had got off to a shaky start, losing Marcus Trescothick and Justin Langer cheaply, but Trego played a mature innings. He added 59 for the fourth wicket with Craig Kieswetter, who should have been run out on 4 but Croft fluffed the take at the bowler's end. It was a costly error.
Danish Kaneria played a key role in helping Essex to a seven-wicket victory against struggling Sussex at Hove. Kaneria's four overs cost just 18 runs and included the key wickets of Murray Goodwin and Chris Adams. Goodwin was well-set on 47 and preparing for a late charge when he was bowled by Kaneria, who earlier trapped Adams lbw for 2 as he attempted a reverse sweep. From 123 for 3 Sussex's innings fell away dramatically as the last seven wickets went for 21 in 21 balls. Essex stuttered slightly at 69 for 3, but an unbroken partnership of 77 between Grant Flower and James Foster made the target appear very comfortable as victory came with three overs to spare. The defeat all but ends Sussex's hopes of making the knock-out stages.