Real Name: Samuel Timothy Smith

If you found out your dad was a MLB pitcher, you might change your name to match his as well. Nothing against the name Smith, but being connected to Tug McGraw has a pretty strong upside. That's what Tim McGraw did early in his life. It's not clear why he adopted the name Tim instead of sticking with Samuel, but there's little doubt we'd cheer for Sammy McGraw as heartily as Tim McGraw.