Needless to say, I don't think Tiger and Elin used a baby-name consultant to come up with "Sam Alexis," but this Wall Street Journal article on baby-naming is a must-read.
Any of you name your kid (or would name a future kid) after something sports-related, like an athlete? Or perhaps you name your kid with athletic stardom in mind... a name that would sound really good over a stadium PA system or SportsCenter highlight. (Or simply win the Name of the Year bracket.)
For the record, Gabe Shanoff was not named for either Gabe Kapler or Gabe Kaplan or future NBA second-round draftee Gabe Pruitt. (And, furthermore, his name isn't "Gabriel" with "Gabe" as a nickname. It's just "Gabe.")
I would say that of all things related to the baby industry, names are my favorite thing.