At 8/1, Tiger Woods is the clear favorite to win the 2013 British Open according to Bovada. Woods has yet to capture a major championship this year -- it's been five years since he last won a major -- but he has four victories in 2013, and he's been on top of the world golf rankings for a significant amount of time.
U.S. Open winner Justin Rose is next in line with 16/1 odds, while Phil Mickelson is third at 18/1. Masters champion Adam Scott has 20/1 odds; Scott finished second in the British Open last year.
Ernie Els is another player worth keeping an eye on -- the last time the British Open was held at Muirfield, he was the winner.
The favorites (full list of odds here):