World number one Tiger Woods has been ousted by fellow Ameircan Chad Campbell in Friday's third round matchup at the WGC-Accenture Match Play Championship.

Woods, bidding for his third title of the year in four starts, struggled with his putting on the front nine before losing a tight battle with Chad Campbell by a hole.

Defending champion David Toms and Phil Mickelson also went out on the day of upsets at a sun-drenched La Costa Resort and Spa.

Left-hander Mickelson, who never led at any stage of his match with Britain's David Howell, was beaten 3 and 1, while Toms, who had led by one after five holes, lost on scores as the Ryder Cup captain of the United States Tom Lehman fought back and sealed a 4 and 3 win with a 15-foot birdie putt at the 15th.

There were also victories for Davis Love III, who beat fellow American Chris DiMarco 3 and 2, and Ireland's Padraig Harrington, who overcame Vijay Singh after 19 scrappy holes.

World number three Retief Goosen, who shaded Briton Luke Donald by a hole, was the only player among the tournament's top 10 seeds to book a place in the quarter-finals.

Australia's Geoff Ogilvy eagled the 21st hole to outlast Canadian Mike Weir, who had led by four with four to play, and American Zach Johnson beat Shingo Katayama of Japan 4 and 3.

Source: Xinhua