16 groups of four players start the tournament. Each group has a seeded player, 1 through 16.
The groups then play in a round-robin format over Wednesday, Thursday, and Friday - every player playing each of the others in their group
Players earn one point for a win, and half a point for a tie. Only the group winner progresses to the round of 16.
If two or more players are tied at the top of a group, there is a sudden death stroke play tie-breaker played.
From there it's a knock out tournament. The round of 16 and quarterfinals are played on Saturday. On Sunday we see the semi-final, the third-place playoff and the Final.
All matches are over 18 holes.
The tournament was first held in 1999. The winner receives a Wedgwood trophy named the Walter Hagen Cup.