Proteas Pile On The Runs
De Villiers - scored his first double century.
AB de Villiers became the first South African to score a double century against India, as the tourists ended day two of the second Test with a massive lead of 418.
Not even heavy rain that forced an early end to play could dampen the spirits of the Proteas, who reached the close on 494-7 in their first innings.
Right-hander de Villiers batted throughout the day to remain unbeaten on 217 at the Sardar Patel Stadium, his highest ever first-class score.
Jacques Kallis was also amongst the runs with 132, playing his part in a fifth-wicket stand of 256 - the highest for any wicket for the South Africans against India.
The duo had begun at the crease in the morning session on 223-4 in their reply to India's first innings total of 76 that had seen them last just 20 overs on the first morning.
Although Kallis somehow survived when a defensive stroke off Harbhajan Singh saw the ball roll back onto his stumps but fail to dislodge a bail, both batsmen cruised through to three figures.
De Villiers was the first to reach the landmark shortly before lunch with a cheeky paddle-sweep off Sourav Ganguly's medium pace.
Kallis was forced to wait until the start of the afternoon to get to his 30th Test ton, a four off the same bowler through the covers taking him past the great Sir Donald Bradman on the all-time centuries list.
Eventually he fell to S Sreesanth to end the partnership, an inside edge going back onto his stumps after an outside edge had flown through the slips only two balls earlier.
Kallis had faced 275 balls and hit 14 fours and a six in his innings, though once again he failed to make a double century in Test action.
Mark Boucher came to the crease to keep de Villiers company and stretch the South African advantage by putting on 66 at a pedestrian pace.
Anil Kumble claimed his first wicket of the innings to break the sixth-wicket alliance and spin partner Harbhajan trapped Morne Morkel lbw without scoring soon after.
De Villiers remained unmoved, though, hitting 17 fours and two sixes, one of which got stuck on top of the stand at mid-wicket.
Paul Harris was alongside him on nine not out when heavy rainfall meant play was called off 12.4 overs from the end, although with three days to go India may need more help from the weather if they are to survive.