Proteas name De Kock as cover

South Africa have called up Quinton de Kock as batting cover for Alviro Petersen ahead of the second Test against Australia in Port Elizabeth.

Petersen has been struggling with a viral infection but if he recovers in time then De Kock will return to his franchise the Highveld Lions, the Proteas have announced.

A decision on Petersen's availability will be made before Thursday morning's toss at St George's Park, where South Africa are looking to level the three-match series at 1-1 after losing the first Test by 281 runs.

The 21-year-old De Kock has yet to play a Test for South Africa but has represented his country in 16 one-day internationals and 10 Twenty20 internationals.