McDermott into Australia's one-day squad

Ben McDermott has been drafted into Australia's one-day squad as cover for injured batsman Shaun Marsh.

Tasmania's Ben McDermott has been called into Australia's ODI squad as cover for Shaun Marsh. (AAP)

Tasmanian batsman Ben McDermott has been summoned into Australia's one-day squad as concerns linger over Shaun Marsh's fitness.

McDermott, a son of former Australian fast bowler Craig McDermott, will join the squad in Adelaide ahead of Friday's second ODI against South Africa.

Marsh missed the series opener in Perth on Sunday because of an abscess on his buttocks and faces fitness tests later this week.

"Part of the decision to include Ben is to ensure we have appropriate coverage should Shaun Marsh fail to recover in time," Australia's chairman of selectors Trevor Hohns said in a statement on Tuesday.

"We will continue to monitor Shaun's progress and give him every opportunity to prove his fitness ahead of the match."

McDermott is a 23-year-old batsman and part-time wicketkeeper who has played four Twenty20 internationals, all on last month's tour of the United Arab Emirates.

The Queensland-born McDermott has been picked despite not featuring in any top-grade cricket since that tour ended - he hasn't played for Tasmania in the Sheffield Shield this season.

But McDermott had strong form in the domestic one-day tournament in September for the Tigers, hitting two centuries and a half-century.