After two seasons, the Saints captain is preparing to head back to England but first he's looking to guide the club to their first grand final appearance in five seasons.

"I go back home in three weeks, pretty much as soon as the grand final is done I go back to England," Frostick said.

"And that will be it for me and James (Evans) really.

"Hopefully we can go out on a grand final win - that is what the aim is."

Standing in their way is minor premiers South Wagga in the preliminary final at McPherson Oval this weekend.

The Blues are coming off just their third loss of the season while St Michaels managed to defend 126 to keep their season alive.

Frostick top scored for the side in the victory and is confident he's in much better shape this week.

Batting down at number six in the win over Wagga RSL after injuring his thumb in a motorbike accident, the 22-year-old is pleased with his recovery.

"It is fine," Frostick said.

"I'll be back to four this week.

"It is miles better than what is was."

While there were no broken bones after the accident, Frostick has been working on strengthening the damaged ligaments.

"I didn't have any power," he said.

"I could use my top hand but I couldn't use my bottom hand as much."

He also expects to be able to bowl this week.

In an unusual prospect leading into such a big clash the two teams haven't faced off since October.

Their two-day clash leading into finals was abandoned after St Michaels failed to cover the Geoff Lawson Oval pitch while heat prevented their Twenty20 match up.

South Wagga's eight-wicket win in round three is the only time the two teams have met on the field and Frostick was quick to play the underdogs card.

"We all know what they are capable - they are a very good team, probably the best in the league," he said.

"We know how strong they are but there is no pressure on us boys this weekend.

"There is a little bit more pressure on them as if they don't make the grand final it will have been a disappointing season for them.

"We'll just go in, play our normal cricket and hopefully it will come out on top for us."

After a poor batting display against the Bulldogs, it is the main area Frostick is looking to improve.

He's especially looking for set batsmen to make the most of any opportunity and failing to capitalise on starts last week.

"We have to make sure we have better partnerships with the bat," Frostick said.

"We have to set a better score than what we did last week and if the rain holds off and we get a full two-day game if we can set a good score, around 230 or 240, it will set us in good stead.

"I think the bowlers have been bowling well all season so there is no pressure on them to perform in a different way, it is on us batters to lift it up a little bit, set better standards and get a better score."

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