Cricket: Khan sparks India revival

South Africa's bid for a first test series victory in India in almost a decade suffered a setback when top-ranked India fashioned a dramatic turnaround on the opening day of the final test.

In-form Hashim Amla (114) and debutant Alviro Petersen (100) stroked centuries to put South Africa in control before Indian spearhead Zaheer Khan triggered a sensational collapse.

The tourists, lost seven wickets in the final session to be struggling at 266 for nine at the close.