Mitch Marsh ready to step up pace workload

Recalled allrounder Mitch Marsh says his body is feeling good despite having struggled to make an Ashes impact with the ball.

Mitch Marsh is yet to hit his straps with the ball but is ready to step up his duties if a second spinner is named for the fifth Ashes Test.

Marsh sent down 12 overs for figures of 0-42 as England, led by double century-maker Alastair Cook, racked up a first-innings total of 491 on a lifeless MCG wicket.

It was a similar story during the third Test in Perth where he bowled a total of 12 overs for match figures of 0-57, although he contributed a personal best of 181 with the bat.

The West Australian's ability to back up Australia's pace trio was a key factor in selectors deciding to name him for the WACA Test in place of Peter Handscomb.

Marsh had only resumed bowling in the Sheffield Shield weeks earlier after undergoing a shoulder reconstruction in March.

But he has declared himself capable of increasing his workload in Sydney should Australia's selectors opt to name a second tweaker and rest one of their quicks.

"I'm feeling okay, bowling-wise," he said on Friday.

"This is obviously a difficult wicket to judge it on as someone who doesn't bowl 150km/h.

"But I'm feeling good, the body's feeling really great which is awesome, on a personal note.

"If they decide to change the team and bring a couple of spinners in, then I'll be ready to go."

Australia are set to reveal their squad for the SCG finale on Saturday.

A second spinner will almost certainly at least travel to Sydney, with Ashton Agar, Mitchell Swepson and Steve O'Keefe likely to be in the mix to partner Nathan Lyon.