An exhilarating century by England Under-19 batsman Nicky Peng carried Durham to a seven-wicket victory against Hampshire in the C and G Trophy third round at Chester-le-Street.
They surged past Hampshire's 50-over total of 262 for five with 9.4 overs to spare to register their first win against first-class opposition since 1992 in the premier knockout event.
Hampshire thrashed 48 off the last three overs of their innings, with opener Neil Johnson making 113 not out.
But Peng made 119 off 128 balls to win the Man of the Match award and with Martin Love and Paul Collingwood both passing 50 at better than a run-a-ball, Durham made light of their task.
Peng played a series of glorious cover drives but also worked the ball through the leg side with effortless timing. He went to his hundred off 110 balls with a swept six off Mascarenhas and also hit 15 fours before he was bowled by Alan Mullally with 23 needed.
After initial help from Love, whose 50 came off only 45 balls, Peng was able to relax towards the end of his innings as Collingwood unleashed all the frustration of his spell with the England one-day squad.
He drove successive balls from Mullally for four and six to long-on in reaching 50 off 39 balls and finished on 59 not out.
Hampshire left their charge too late, never developing a worthwhile stand as two batsmen suffered self-inflicted run-outs in slipping to 172 for five.
At that point Dimitri Mascarenhas joined Johnson with 9.5 overs left and they added 90 runs, with Mascarenhas's unbeaten 35 coming off 27 balls.