The former world number one makes his first course appearance since May in a tournament he has won seven times in the last 11 years.
“22-1 was the biggest price we have ever quoted at the start of a tournament, and despite the lack of form and match practice, punters are still keen to support their fallen hero,” said Coral spokesman Gary Burton.
Outright favourite is Rory McIlroy at 12-1, with Lee Westwood next at 14-1 and Luke Donald 16-1.
**WGC BRIDGESTONE INVITATIONAL
12-1 Rory McIlroy, 14-1 Lee Westwood, 16-1 (from 22-1) Tiger Woods, Luke Donald, 18-1 Dustin Johnson, Phil Mickelson, Steve Stricker, 22-1 Nick Watney, 25-1 Martin Kaymer, Matt Kuchar, 28-1 Hunter Mahan, 30-1 Jason Day, 33-1 Bar