The game is played in the stroke play format with over 72 holes consisting of:
1. Top 50 players from the Official World Golf Rankings; and
b. Top players from member tours' money lists or orders of merit coming from the:
a. Top 30 PGA Tour FedEx Cup list,
b. Top 20 European Tour, and
c. Top 3 each from Asian Tour, Japan Golf Tour, PGA Tour of Australasia, and Sunshine Tour
PGA Tour WGC-CA Championship Winners
2009 Phil Mickelson United States
2008 Geoff Ogilvy Australia
2007 Tiger Woods United States
2006 Tiger Woods United States
2005 Tiger Woods United States
2004 Ernie Els South Africa
2003 Tiger Woods United States
2002 Tiger Woods United States
2001 Cancelled due to September 11 attacks
2000 Mike Weir Canada
1999 Tiger Woods United States