Twenty20 Cup, Edgbaston: Gloucestershire 135/2 (13.1 overs) beat Warwickshire 134/7 (20 overs) by eight wickets
Gloucestershire's Ian Harvey hit the first century of the Twenty20 Cup to inflict Warwickshire's first defeat of the competition at Edgbaston.
Australian Harvey topped compatriot Brad Hodge, whose 97 for Leicestershire was the previous best, when he hit the winning runs off the first ball of the 14th over to reach three figures off 50 deliveries.
The Gladiators always looked set for victory after restricting their hosts to 134-7, and they set off in typically brisk fashion, Harvey and Craif Spearman sharing a 96-run opening stand.
Although Jonty Rhodes fell fifth ball for one, Harvey's main worry was whether he would run out of time to reach the milestone but Mark Hardinges manoeuvred the strike in his team-mate's favour.
Gloucestershire are certain to finish top of the Midlands/West/Wales Division, but Warwickshire could still qualify for the semi-finals as best runner-up.
The Bears struggled from the off, Jon Lewis dismissing Nick Knight and Dominic Ostler in the second over.
Only Jonathan Trott could stay with the pace, the South African-born youngster carrying his bat in a relatively-patient 65 not out from 54 balls.
Gladiators skipper Mark Alleyne also finished with a brace and there was some tight bowling at the death from Harvey and spinner Martyn Ball.
Warwickshire: N M Carter, N V Knight (Capt), D P Ostler, T L Penney
I J L Trott, G G Wagg, C O Obuya, D R Brown, N M K Smith
Waqar Younis, K J Piper (Wkt).
Gloucestershire: C M Spearman, I J Harvey, S P Pope (Wkt)
J N Rhodes, M W Alleyne (Capt), M G N Windows, M A Hardinges
A P R Gidman, M C J Ball, J Lewis, A M Smith.