Jonah Freedman of Sports Illustrated has compiled his annual list of the top 50 earning U.S. athletes, taking into account salary, winnings, and endorsements. Always a fun read. Some interesting points:* Tiger Woods, not surprisingly, ranks first, earning just under $100 million ($92 million of which is from endorsements), followed by fellow golfer Phil Mickelson.* Lebron James ranks third, earning $42 million. Will his endorsement income--which is already $28 million a year--go up should he ...