AUCKLAND, FEB 20: A dashing century from Nathan Astle led New Zealand to a crushing seven-wicket victory over South Africa in the third One-Day International at Eden Park today.Chasing a modest 213 for victory, Astle hit the winning runs to finish unbeaten on 100 (12x4, 2x6) from 126 balls - his sixth one-day ton - with the home side cruising to their target with 41 balls to spare.Astle was brutal when facing off-spinner Pat Symcox who now faces the return journey to South Africa having been selected just for one-day games - contemplating figures of naught for 64 in 7.1 overs.An unbeaten century from Lance Klusener (103: 130b, 8x4, 1x6) earlier provided the backbone to a poor South African batting display after Dion Nash had won the toss and put them in to bat.ScoreboardSouth Africa: Gary Kirsten c Doull b Allott 4, Mark Boucher c Parore b Allott 16, Lance Klusener not out 103, Jacques Kallis run out 12, Daryll Cullinan b Harris 14, Hansie Cronje c Twose b Harris 5, Jonty Rhodes b Astle18, Shaun Pollock lbw Harris 20, Nicky Boje not out 12. Extras: (4lb, 4w) 8. Total: (for 7 wickets, 50 overs) 212.Fall of wickets: 1-24 2-24 3-65 4-85 5-97 6-144 7-174Bowling: Doull 8-1-37-0 (1w), Allott 10-1-51-2 (2w), Nash 4-0-29-0, Larsen 10-0-34-0, Harris 10-0-32-3, Vettori 5-0-14-0 (1W), Astle 3-0-11-1New Zealand: Matthew Horne c Klusener b Pollock 21, Nathan Astle not out 100, Craig McMillan c Boucher b Donald 13, Roger Twose b Klusener 28, Adam Parore not out 26. Extras (2b 7lb 1nb 17w) 27. Total (for three wickets, 43.1 overs) 215Fall of wickets: 1-39 2-52 3-123Bowling: Pollock 8-2-20-1, Kallis 6-0-22-0, Symcox 7.1-0-64-0, Donald 7-1-21-1, Cronje 3-0-15-0, Klusener 5-0-29-1, Boje 7-1-35-0