Allenby keeps his cool to win at Sun City

SUN CITY, South Africa (Reuters) - Australia's Robert Allenby kept his cool to win the Sun City Challenge on the third hole of a playoff at Gary Player Country Club on Sunday, pipping defending champion Henrik Stenson of Sweden.

Both players finished 72 holes in 11-under-par 277, Allenby shooting 71 in the final round and Stenson catching him with a 69. The pair then played the 18th hole three times before Allenby coolly hit a six-iron to within five feet of the flag to set up an easy par.

Stenson hit his approach shot into the grandstand, from where he had a free drop, but he could only pitch the ball 30 feet past the hole.

The world number seven had earlier three-putted the 18th hole in regulation play to make bogey. Allenby also bogeyed the last in regulation play after a poor chip from the fringe.

(Reporting by Ken Borland; Editing by Sonia Oxley)