WA are in a commanding position after dismissing the Tigers for 197 late on the second day and lead by 172 runs after openers Cameron Bancroft and Sam Whiteman survived a tricky five over period before stumps to finish 0-2.

Marsh snared 3-21 from 12 overs including the big scalp of Tigers’ captain Matthew Wade and both Tasmanian openers when the hosts looked in control.

Marsh broke the game open when he ended an 84-run opening stand, removing Alex Doolan for 46.

The 27-year-old dismissed Jordan Silk (26) two overs later, as the Tigers lost 4-11 in Wednesday's middle session.

Marsh struck again shortly after tea bowling the in form Wade for 38.

"It's nice to be back bowling. I'm not sure my body agrees with it," Warriors' captain Marsh said.

"I've had a few little injuries over the last five weeks. It's nice to come back and contribute with a few wickets."

Left-arm quick Joel Paris helped roll through the Tigers' tail claiming figures of 3-33.

Having resumed at 7-334 at Blundstone Arena, the Warriors tail batted with great resolve, adding a further 33 runs before Liam Guthrie (14) fell to Jackson Bird.

Youngster Josh Philippe top scored for WA on day one with 76, his second half century in as many innings.

Fourth-placed WA are chasing a win to keep their chances of a Shield final berth alive.

With two rounds to play, they’re also relying on results going their way to jag a top-two spot.

Day Three gets underway from 7:30am AWST tomorrow morning.