Not only is the 26-year-old determined to help the Tigers into a fifth straight grand final, but he's also looking to take a slice of Group Nine history for himself.

Luff is the favourite to win a second Weissel Medal on Friday night, but his main focus is getting the better of Tumut in the preliminary final at Harris Park on Sunday.

Coming off an extra-time loss to Southcity, the Tigers are out to extend their nine-year winning streak against the Blues.

"It's going to be a big clash against Tumut this week," Luff said.

"Tumut have had a long haul and hopefully they will be fairly fatigued.

"It is do-or-die so we are going to need to step up."

Luff believes the Tigers have the mental edge of the Blues, especially after taking a 34-6 win over them to claim the minor premiership in the last round of the season.

However he is wary of the threat posed by rival dummy half Lachlan Bristow.

"They've got Lachlan Bristow back now and he definitely adds a lot of spark around the ruck and gets them on the front foot," Luff said.

"Like we've said all year about Tumut we just have to contain their forward pack and we will come away with the win."

Luff is also looking to lift his game after a couple of uncharacteristic errors from good scoring positions in the 26-20 loss on Sunday.

First he failed to contain a ricocheted kick while virtually over the line before spilling a pass following a Luke Berkrey break in plenty of space.

"I think we shot ourselves in the foot and I dropped a couple of balls there that could have led to tryscoring opportunities," Luff said.

"You have to take those opportunities and as a team I think we will be better for the loss.

"You have to look at it positively, as that's the position we're in, but I felt our legs were fairly heavy on the weekend so if we can find a few gains before the grand final I think it will benefit us."

Luff won his first Weissel Medal as a 22-year-old.

However he's not too confident his back end of the season will see him claim a second.

"I feel my last two games probably weren't too strong but the three games after the votes closed I think I might have got a few good points there," he said.

"Hopefully it gets me across the line."

The 26-year-old has the chance to enter rarefied air if he was to back up his 2015 success and be crowned Group Nine's best for a second time.

Gundagai teammate James Smart did so with his medal success in 2017 with Baden Power and John Shea the only others to do so.

"It would be a fantastic achievement and I would be pretty proud of myself to be honest," Luff said.

"It's a fairly good individual recognition of you season and to win it twice you are in a fairly elite category there and not many people have done it.

"It would be a massive effort and I'd love to do it."

He rated Southcity captain-coach Kyle McCarthy and Brothers playmaker Dylan McLachlan to beat.

Luff was nine clear of McCarthy and last year's winner Zac Masters when the tally was last revealed in round 13.

McLachlan was a further three behind.

"Finishing off the season I probably wasn't as strong as I could have been in the last couple of games," Luff said.

"I know Kyle McCarthy had a fairly good finish to the year, but Southcity had a couple of losses in last last five games which might work in my favour, but I think a dark horse is probably Dylan McLachlan.

"He's played some really strong football and could definitely have scored some good points in the back end of the season.

"I just hope the 12-point buffer on him is big enough.

"We will just have to wait and see."

Group Nine's presentation night is on Friday with entertainment from Eric Grothe & the Gurus.

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