CLYDESDALE BANK 40 TROPHY FINAL, Lord's: Warwickshire (200-7) beat Somerset (199) by three wickets
Bell (l) and Tahir (r) were both instrumental in Warwickshire's victory
Warwickshire beat Somerset by three wickets in the final of the Clydesdale Bank 40 Trophy at Lord's.
Leg spinner Imran Tahir took 5-14 in four overs as Somerset collapsed from 176 for 3 to 199 all out.
And a knock of 107 off 95 balls from captain Ian Bell steered Warwickshire to glory with six deliveries to spare.
The loss completed a hat-trick of runner-up finishes for Somerset, who were also second best in the County Championship and the FP t20 final.
Bell's century could not have been bettered timed as he hopes to impress England selectors ahead of the Ashes squad announcement on Thursday.
"In terms of one-day cricket, I probably haven't played better than that," he reflected.
"I've really enjoyed the experience of leading the side and I feel very lucky to captain Warwickshire. It's something I've wanted to do for a long time - especially to lead the side out at Lord's."
Bell's decision to field looked dubious early on when Marcus Trescothick and Craig Kieswetter's opening partnership yielded 41 runs off seven overs.
Paceman Keith Barker, though, ended Treschothick's stint - the former England man flapping at the 23-year-old's first delivery as he chipped to Chris Woakes at mid-wicket.
Peter Trego fell in a similar fashion, spooning a catch to Rikki Clarke for 11. Kieswetter had whacked four boundaries but he went for 37 when he pulled a shot to Barker at deep mid-wicket to gift Neil Carter a wicket.
Nick Compton and James Hildreth teamed up for a 95-run stand to steady Somerset.
After reaching 44, Hildreth was run out attempting a single that should never have been called by Compton, and Somerset's innings began to unravel.
Tahir trapped Jos Buttler lbw for a duck and two overs later Aurl Suppiah (one) followed. Compton, who finished with an impressive 60, then also went for leg before.
Arul Suppiah (one) and Ben Phillips (one) fell in quick succession before former Pakistan A international Tahir claimed his final wicket when Murali Kartik was stumped by Richard Johnson to finish with figures of 5-41.
"To come on and turn a game like that, there's not many people in world cricket who could do it," Bell said of Tahir's sensational contribution.
"He bowled quite well first spell and then he turned it on its head in his last four overs."
Carter dismissed Mark Turner for eight, as a shaken Somerset were left to reflect on the loss of seven wickets for just 23 runs.
Somerset gave themselves a fighting chance by taking some early wickets - Phillips sending Carter to the pavilion for five and Alfonso Thomas ousting Barker for three.
Jonathan Trott, released from England one-day duty, could only make 17 as he edged to wicketkeeper Kiewswetter off another Phillips delivery.
Bell, though, fared much better, hitting his half-century mark from 53 balls to take Warwickshire to the hundred mark.
Thomas halted Jim Troughton's stand at 30, also at the wicket, while Darren Maddy could only add nine as Turner made it 135 for five.
With five overs remaining, an over-zealous Clarke (19) was caught by Hildreth off Trego as he attempted to clatter six of the 36 required for victory.
Bell continued to make inroads, edging his side closer to their target as he notched another 20 in the 38th over.
The 2005 Ashes winner was caught by Butler off Turner before the winning runs were scored but his mature knock had proved decisive.
Losing skipper Trescothick admitted the season had been "pretty devastating" for his side after seeing them lose the Twenty20 final on the last delivery to Hampshire at the Rose Bowl last month before Nottinghamshire pipped them to the Division One title in the dying seconds of the campaign on Thursday.
"They are all gutted, as you can imagine," he said. "It's very tough to take, but we have to learn some lessons from what is happening. There is a reason why it happens.
"You only have to look at the two guys from Warwickshire; Imran Tahir getting five to take the heart out of the game then Ian Bell showing the world-class player he is.
"That's what you've got to do if you want to be the best, you have to show it at times. We've got to improve and try to emulate that."