Michael Carberry struck a superb 96 as defending champions Hampshire eased to a five-wicket triumph over Durham at the Ageas Bowl to stay top of Group B in the Yorkshire Bank 40.
Carberry was out, caught at the wicket off Mark Wood with one run needed, but the damage had been done as Hampshire judged a run-chase perfectly to reach their target of 242 with five balls to spare.
Rain reduced the match to 36 overs each and Hampshire captain Jimmy Adams chose to bowl first and was soon justified as Durham struggled to 45-4 in the 11th over.
But Ben Stokes and Will Smith led a fightback with rapid fifties, Stokes punishing the Hampshire bowlers with an aggressive 87 off 71 balls in an innings that included six fours and four sixes before being stumped off Chris Wood (3-37).
Smith (50) and Ryan Pringle (26) then put on 74 valuable runs for the seventh wicket before pace bowler David Griffiths (3-42) returned to remove them both.
Durham's score always looked vulnerable despite claiming the wicket of James Vince to the second ball of the Hampshire innings.
That brought together Carberry and Adams and the experienced second-wicket pair put on 133 in 18 overs before Adams slogged Scott Borthwick to Mark Wood at mid-wicket after making 67 from as many deliveries.
George Bailey and Sean Ervine each helped Carberry keep pace with the run-rate so that with three overs left Hampshire required 28.
It was then that Liam Dawson took control, smashing an unbeaten 37 off 21 balls with sixes off Chris Rushworth and Wood and four other boundaries.
Carberry departed looking for the winning run and with a century in his sights but his 86-ball innings had been the key to Hampshire's third victory in this season's competition.