The extent of Shaun Marsh’s calf injury remains unclear just two days before the Australian batsman is due to leave for a Test tour of South Africa.

Marsh left the field in the 36th over of England’s batting innings in Sunday’s one-day international in Adelaide.

“Hopefully it’s not too bad, hopefully it’s just something small,” Australian captain Michael Clarke said post-match.

“He was celebrating okay, he was still moving all right out there when he went off the field.

“Knowing what we have got coming up and (physiotherapist) Alex (Kountouris), I think they would have kept him off the field just for precaution more than anything else.”

Marsh, a shock inclusion for Australia’s three-Test tour of South Africa, has a history of injuries including back and hamstring problems.

The 30-year-old is due to fly to South Africa on Wednesday with the rest of the Australian squad for the Test series which starts February 12.