Defending champion and tournament host Tiger Woods tops the star-studded golf field for the fourth annual Target World Challenge, which begins later Thursday in Thousand Oaks, California.

In addition to Woods, 11 of the top 15 players in the world rankings are entered in the exclusive 16-man field at the Sherwood Country Club. The winner of the 72-hole event will take home $1 million. Last year, Woods rallied from a four-shot deficit on the final day, carding an 8-under par 64 to post a three-shot victory over Vijay Singh of Fiji. This year, Woods won five tournaments on the PGA Tour, including his third Masters and second U.S. Open, and earned more than $6.9 million to lock up his fourth consecutive money title. Players who qualified based on their official world rankings include Phil Mickelson (2), Retief Goosen (4), David Toms (5), Davis Love (7), Vijay Singh (8), Padraig Harrington (9), Jim Furyk (10), Nick Price (11), Michael Campbell (13), Chris DiMarco (14) and Bob Estes (15).

Rich Beem, Colin Montgomerie, Mark O'Meara and Bernhard Langer accepted special exemptions for the event. Eight countries, including the United States, will be represented in the tournament. The field also includes eight Ryder Cup members - Montgomerie, Harrington and Langer from the victorious European team and Woods, Mickelson, Toms, Love and Furyk from the American squad.