Trescothick scored nine runs against Northants on Tuesday
Somerset captain Marcus Trescothick says reaching the FP t20 finals day is a reward for the fans.
The county booked a semi-final against Nottinghamshire at The Rose Bowl on 14 August with a seven-wicket victory over Northants at Taunton.
Trescothick told BBC Radio Bristol: "We have had great support this year and this is a reward for them.
"Obviously, it's great for the team, too, but this is also a bit of pay-back for our fans."
Trescothick praised the role of his spin attack as Northants were restricted to 112-6 in their 20 overs.
"The spinners were magnificent," he added. "Murali [Kartik] speaks for himself, he's been a magician so far this year and Arul [Suppiah] coming in and doing his job was ideal.
"They bowled eight overs, for 2-29 between them. That's where the game was killed off."
Trescothick, whose side are fourth in County Championship table and top of the CB40 league, believes his players have improved as the season has progressed.
"We have become far more consistent. It was never a case of trying to gee them up for this, it was almost a case of getting them to calm down a little bit."
Trescothick is certainly not underestimating the threat posed by Notts. "They are a very entertaining side with a lot of international cricketers. It will come down to pressure and who copes with it best on finals day."
Somerset have a chance to weigh up their semi-final opponents when Notts visit Taunton for a vital Championship match starting on Thursday.
"It's a huge game for us," added Trescothick. "Hopefully we can put in a good performance and climb back up that table.
"We're two evenly matched teams both playing well."
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