India off-spinner Ravichandran Ashwin, centre, was the pick of the bowlers on Saturday. Gianluigi Guercia / AFP
India off-spinner Ravichandran Ashwin, centre, was the pick of the bowlers on Saturday. Gianluigi Guercia / AFP

Ravichandran Ashwin finds redemption in South Africa as he dent hosts' progress in Centurion cricket Test