Australian Nathan Green beat Retief Goosen in a sudden-death play-off on Monday to win the rain-delayed Canadian Open. After both players finished on 18-under for the four rounds of regulation play, Green claimed his first PGA Tour victory at the second extra hole – the 17th – where Goosen found trouble off the tee and ended up missing a nine-foot putt to save par and extend the play-off. Goosen had missed a chance to win the title at the previous play-off hole – the 18th – but missed a birdie putt from less than 10ft, pushing it to the right, just as he would do at the next. Play had entered a fifth day in Ontario after some nightmare weather which had made the course unplayable for long periods of the week. Goosen and Green performed admirably in the final round to overhaul Jason Dufner, who started the day at the top of the leaderboard with his third round still to be completed. Goosen carded a three-under round of 69 and Green a 68 as they pulled clear of the field to finish on 18-under overall. For a long time on the back nine it appeared the title was heading to Green but Goosen came up with a stunning eagle at the par-five 18th to close the two-shot gap to his rival. With the South African in the clubhouse, Green needed to birdie one of the last two holes but he was unable to do so. His best opportunity appeared to be at the 18th – a hole he had played three times already this week and gone birdie-birdie-eagle. But on this occasion he hit his second shot through the green, sent the following chip back across the green and had to settle for par. Dufner failed to fire on Monday. By the time the third rounds were complete, the American found himself in a three-way tie for the lead, having been joined in the top by Anthony Kim and Goosen. And a final round of 73 left he in a tie for third place alongside Kim, four shots behind the play-off contenders. The highest-placed European was Scot Martin Laird who finished with a superb 65 to finish 11-under-par, seven shots behind the winner.