St Kilda coach Ross Lyon is keen to regain Zac Dawson from injury for the key role of shutting down Richmond spearhead Jack Riewoldt on Saturday.

Riewoldt leads the Coleman Medal with two rounds remaining in the AFL's home-and-away season with 68 goals, one ahead of Western Bulldogs veteran Barry Hall.

"If Zac's available, he'll play. He's our fullback," Lyon told reporters on Tuesday.

"He's going to train (on Tuesday) and I think he's going to be available."

The Saints won by 38 points in round 11 at Etihad Stadium with Jack Riewoldt playing a lone hand with six of Richmond's eight goals in a losing side.

"I'm happy for Jack to kick six and the Tigers to kick nine," Lyon added.

Dawson has been out for two weeks for the third-placed Saints because of a broken hand.

The Riewoldt family could be kicking bags of goals at either end of Etihad Stadium on Saturday with Jack's cousin Nick hitting form in sensational fashion last week with 7.5 in St Kilda's 52-point win over North Melbourne.

Lyon said the Saints skipper, who has played six games since returning from hamstring surgery, was in good shape after his best-afield effort against the Kangaroos and would continue to work on his match conditioning in the build-up to September.

Lyon gave an angry three-quarter time address to his players on Sunday after a lack of tackling intensity in the third term and said after the match that only a four-quarter performance would be good enough to win finals.

"Our aim is to fix our football. At the minute we reckon we're about 60 to 70 per cent, roughly," he said on Tuesday.

"We need to find that 30 per cent in a hurry, so that's (where) our energies are going into."

Lyon said the decision by Richmond's Ben Cousins to retire at the end of the season would add interest to Saturday's clash.

"He's had a fantastic career," he said.

"It's great to see him resurrect his personal life, just viewing from the outside (and) without knowing intimate details, and I'd like to acknowledge his career.

"It's been wonderful and I think he walks away achieving out of the game what he wanted to."

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