Ryan Rickelton and Wiaan Mulder hit centuries to rescue South Africa from 181 for 5 and set Australia a 288-run target, leaving the third Test and the series on a knife-edge heading into the final day at Newlands. Brief Scores: South Africa (329 and 387) lead Australia (429) by 287 runs at the close of play on Day 4 of third TestSouth Africa were staring at a collapse at 181 for 5.