Australia were chasing 310 for victory on the final day and had slipped to 215 for six when Haddin and Johnson, whose places in the team have been questioned in the media, added 72 off 81 balls to take Australia to the verge of victory.

Haddin scored 55 and was dismissed 23 runs shy of the target, quickly followed by Peter Siddle for four as South Africa fought back with all four results still possible in fading light at the Wanderers.

But 18-year-old Pat Cummins, who had taken six wickets in South Africa's second innings and was also adjudged the man of the match, completed a dream debut by scoring 13 not out and hitting the winning runs as he pulled leg-spinner Imran Tahir over the infield for four.

Johnson finished on 40 not out, a commanding innings that came off just 47 balls and included six fours.

Seamer Vernon Philander, who won the man of the series award, had earlier made his mark with five wickets, but South Africa captain Graeme Smith replaced him with Tahir for what proved to be the final over.

No play was possible in Monday's first session because of rain, meaning the stands were largely empty for the tense finale. South Africa won the first Test of the two-match series in Cape Town where Australia were bowled out for just 47 in another enthralling encounter.