Running between the wickets and catches behind the wicket are areas that need "sharpening up" in a season that sees the Tigers in third place at the halfway point, with just one outright win.

"One of the things we have had is an unsettled slip cordon with [Luke] Butterworth being injured and [Mark] Cosgrove having a broken thumb and I think that has had an effect on us with our catching behind the wicket," Marsh said.

"Those two are back in now so hopefully that will be better and with our running between wickets, we had a good long chat about that in Adelaide and we haven't had a run out since [after having 12 in nine matches in both competitions]."

Marsh didn't rule out his players suffering from mental fatigue in a condensed domestic summer, with the team having time off this week to refresh.

He was confident the Tigers could play "good cricket for longer" after its collapse of 7-29 at the weekend against New South Wales gave the Blues an easier total to chase.

The next opportunity will come against the fourth-placed Western Australia on Sunday at Bellerive Oval, with paceman Andrew Fekete replacing the injured Ben Hilfenhaus, with Jackson Bird not yet having enough cricket under his belt to warrant a recall.

"They [WA] have got an interesting mix of some younger guys and more senior players and they've blended into that order which has really worked for them this year," Marsh said.

"We've got to try to unsettle them by bowling the right line and length to each batsman."

Despite not playing in the second Ashes Test, James Faulkner has not been released from his 12th man duties, with Marsh saying "the issue for us is to make sure Jimmy gets some cricket under his belt as at the moment he hasn't played for a couple of weeks."

The Warriors will be without quick Nathan Coulter-Nile, who is on standby for the Third Test, while former Test batsman Marcus North is out of the side indefinitely following the death of his brother.

TASMANIA:Tim Paine (c), Xavier Doherty (vc), Luke Butterworth, Mark Cosgrove, Ed Cowan, Alex Doolan, Ben Dunk, Andrew Fekete, Evan Gulbis, Sam Rainbird, Clive Rose, Jordan Silk.

WA: Adam Voges (c), Ashton Agar, Cameron Bancroft, Jason Behrendorff, Ryan Duffield, Michael Hogan, Simon Mackin, Mitch Marsh, Shaun Marsh, Luke Towers, Ashton Turner, Sam Whiteman.