Varun Chopra's century proved crucial as Warwickshire Bears clinched a second final appearance in three years with a resounding semi-final win by 23 runs over Lancashire Lightning at Old Trafford.
A candidate to be England's new Test opener, Chopra anchored the 2010 winners' score of 250 for six with 110 off 124 balls, including nine fours and a six.
Lancashire then crumbled to 90 for five in reply as they went on to lose for the first time in seven matches at Old Trafford this season.
This was also Lancashire's 11th semi-final defeat in the last 12 in all forms of limited-overs cricket as they were bowled out for 227 with two balls left.
Hampshire followed up their success at t20 finals day by booking their spot in the final with a comprehensive eight-wicket semi-final victory over Sussex at Hove.
New ball bowler Neil Carter excelled with four for 38, while Paul Horton top-scored for the hosts with 78 off 63 balls.
Openers Michael Carberry (68) and James Vince (58) launched a blistering assault before Simon Katich (47 not out) and Jimmy Adams (44no) completed the job as Hampshire chased down Sussex's total of 219 for eight with 42 balls to spare.
Luke Wright had made a brilliant 122 for Sussex but they collapsed from 195 for three to 199 for eight as Sean Ervine took three for 36 and Danny Briggs two for 32.
- Lancashire Lightning
- Varun Chopra