What is Tiger Woods endorsing?

Sports Illustrated released its list of 50 top-earming American athletes and most of the results look normal except the endorsements for the top golfers. Tiger Woods will make $100 million from endorsements this year, Phil Mickelson $47 million. Wow. What make golfers so attractive that companies are spending so much money on them? I don't get it. I always knew Tiger cleaned up but that's major cleaning up. Maybe because I don't follow golf or never seen the attraction in it, hence my confusion.

Other interesting things I noticed from the list:

• Lebron has the highest endorsements of other players. I can see that. I see his ads and he's the supposed heir to the Jordan throne.
• Garnett is the highest paid player in the NBA. I thought it was Shaq.
• Kobe and Shaq still rule the NBA
• Peyton Manning is the highest earning NFL player at #12. See this article on Free Money Finance for analysis on the spread in the different sports.

The top 20 international athletes are obviously dominated by soccer stars. The next generation can be found here.