Warner suffers bruising after being struck in MCG nets

David Warner tested out his sore thumb in the nets Getty Images

Australia's injury worries continued on the second day in Melbourne, with David Warner unable to take the field during India's innings after being hit while batting in the nets.

Warner was struck on the right forearm while batting on the MCG practice wickets before play, and a Cricket Australia spokesperson said he had "significant bruising" which had limited his ability to field.

Twelfth man Peter Siddle was on the field for Warner when India's first innings began after tea, but it remained to be seen whether Warner would take the field on day three.

"Hopefully Davey's all right in the morning," captain Steven Smith said. "He copped a hit in the nets today and he's got a bruised arm. He was struggling to clench his fist. Hopefully he has a good sleep and feels better in the morning and can come out and field."

Warner entered the match with a sore left thumb, after being struck while batting during Australia's chase in the second Test at the Gabba.

Before the Boxing Day Test Warner said the thumb was causing him some pain and he would field at mid-off rather than his usual position at gully in an effort to protect the thumb. He was out for a six-ball duck in the first innings.

The news of Warner's injury came shortly after Cricket Australia confirmed that allrounder Mitchell Marsh will miss the fourth Test in Sydney after suffering a setback in his recovery from a hamstring injury.

The Australians are already without captain Michael Clarke, whose hamstring problem has ruled him out of the remainder of the series, although he is hopeful of recovering in time for the World Cup.