When a golfer wins a tournament — any tournament, but especially a major championship — returning the following year to defend that title is a big deal. Not many golfers win the same trophy in consecutive years, and being the defending champion is accompanied by lots of great attention. But not all defending champs in the U.S. Open have returned. Sometimes that's been by choice, sometimes due to injury, and even, in one case, because the U.S. Open winner died before the next year's tournament.