South Africa skipper Graeme Smith and Jacques Kallis both scored centuries and combined for a 200-run partnership as the tourists virtually batted New Zealand out of the first Test by the close of play on the third day Friday. Smith (115) and Kallis (107 not out) had come together with their side on 47 for two and with just a 12-run lead after Doug Bracewell had taken two wickets in one over before lunch to give the hosts hopes of pushing for an upset victory. The experienced duo, however, consolidated their innings before lunch then built on it afterwards to guide South Africa to 268-3 by the close of play at University Oval in Dunedin, an overall lead of 233. Jacques Rudolph, who was given out lbw to Bracewell shortly before the close but had the decision overturned when television replays showed the ball had marginally pitched outside leg stump, was with Kallis on 13. South Africa needs to sweep the series 3-0 to take over the world No. 1 Test ranking from England.