Leicestershire's second team stayed on course for an unprecedented treble after a dramatic win over Middlesex at Grace Road.
The five-wicket victory put Lloyd Tennant's side into the final of the Second XI Trophy, where they will face Lancashire on September 8.
The venue for the final is still to be decided.
There were heroes all round for the Foxes, who have already won the T20 title and are also through to the Second XI Championship final next month.
The match was affected by the heavy rain, which fell throughout Monday with the start delayed until 2.15pm meaning that each side faced 30 overs rather than the scheduled 50. The visitors posted 202-5 in their innings, Leicestershire getting home with three balls to spare – but that merely scratches the surface of the drama at the County Ground with the Foxes only getting over the line thanks to a blistering late assault from Tom Wells and Lewis Hill.
Half-centuries from Nick Gubbins and Cameron Steel, together with a quickfire unbeaten 33 from Ollie Rayner, gave the visitors a more-than-useful total after they had been put in to bat by the Leicestershire's skipper, Matthew Boyce.
Dan Redfern was the pick of the home bowlers as he claimed 2-19 from six overs of off-spin.
County suffered an early blow in their run chase with the loss of Michael Thornely but a superb innings from Redfern kept them well in the hunt.
But when he fell for 80, made from 70 balls, Leicestershire still required 52 to win with a little more than four overs remaining.
Redfern's departure, however, brought together Wells and wicketkeeper Hill and they were to have a dramatic final say on matters.
A target of 48 from 24 balls was reduced to 28 from 12 – then Wells opened his shoulders and smashed three consecutive sixes from the last three balls of the 29th over.
With eight runs required from the final over, County were favourites and Hill – who has just returned to action after a finger injury – completed the job when he hammered the third delivery for another maximum.
Wells finished unbeaten on 58 from 38 deliveries and Hill was 24 not out off just 14 deliveries.
Lancashire beat Sussex by seven wickets at Horsham in their semi-final.
County overcame the Red Rose men when the sides met in the semi-final of the T20 competition earlier in the season before defeating Somerset in the final.
