That, I think may be the real issue. I remember a few years back reading about a kid playing in the Little League World Series that was way bigger and better than the other kids. He had a forged birth certificate from another country that made him a few years younger than he really was.
This is a common tactic for some sports-obcessed parents. Thinking of the big bucks for pro athletes, they do things like hold their kid back a few years in grade school, so they can be the biggest, oldest football player in high school and be a standout star, recuited to a major college, etc.