The TCL powerhouse is unbeaten through the preliminary rounds and with the home-ground advantage will start favourite to repeat last year's success.

Trevallyn T20 captain Shannon Rumbel said his side was "quietly confident" of continuing its winning run in the shorter format.

"It would be nice to go back- to-back, but we're not going in over confident because too much confidence does not always work out the best," he said.

"I've been very happy with the way the team has gelled together and we've had a few of the young boys step up and they have done well to retain their spots.

"I can't fault our bowling, batting and fielding because it's all been going pretty well."

Rumbel said Trevallyn's batting was its strongest area shown by its ability to post scores of around 150-160 and chase down totals when required.

Trevallyn made the semi- final stage of Cricket Tasmania's statewide T20 competition before losing to Latrobe last season, but Rumbel said they were not looking any further ahead than this game.

"We love playing against Legana and they are always competitive and play at 110 per cent and it is always a good challenge against those boys."

Trevallyn should have an unchanged line-up for the final.

LEGANA captain Matthew Wells said his side's form had not been its best over the past three weeks, but they had managed to find a way to win all three of their preliminary rounds.

"The T20 format doesn't really suit our type of cricket, but we're in there and we'll have a crack at it and we're a chance," he said.

The Durhams will be strengthened by the return of Ian Champion and Corey Taylor.

"Champy has been hitting the ball pretty well so that will strengthen our batting and Corey as well and they are both good fielders and Champy bowls as well."