Darren Lehmann acknowledges Shaun Marsh is “knocking down the door” as Australia mull their XI for the fourth Ashes Test.

Marsh was somewhat unlucky to be dropped for the Ashes opener.

He posted a ton against Kent in the squad’s first tour game, having played both Tests in the West Indies due to Chris Rogers’ concussion.

Marsh was overlooked for the clash in Cardiff and his next chance to shine came in a first-class match against Derbyshire.

The 32-year-old, who has no county experience, reached three figures again.

Coupled with Adam Voges’ unconvincing Test form, selectors will be contemplating at least one change as they seek to square the series 2-2 when the fourth Test starts on Thursday.

“He’s knocking the door down hard, isn’t he,” Lehmann told radio station FIVEaa.

“He was very good in the West Indies for us.

“He’s starting to work it out as you do when you get to that sort of age.

“You start to be in the prime and really understand your game well.”

The coach noted he and chairman of selectors Rod Marsh would inspect the Trent Bridge pitch closer to day one before settling on a team.

“We’ll have to work out if we can fit him in or not,” he said.

“You don’t like to change too much. This side beat England by 405 runs (in the second Test at Lord’s).

“We’ll just have to wait and see with where we go … it will be interesting to see what sort of wicket we get.”

Promoting Peter Siddle would be another tweak to the XI that Lehmann and Marsh are likely to consider.

Josh Hazlewood and Mitchell Starc both largely struggled for control at Edgbaston, where England waltzed to an eight-wicket win.

Starc scored an impressive half-century in the second innings, while he also dismissed Alastair Cook with a sensational delivery that dipped late to kiss the top of off stump.

“He didn’t bowl as well as he would have liked in this one,” Lehmann said.

“But he bowled better in the second innings, bowled a ripper to get rid of Cook.”