10% of people are left handed, and 22% of twins are left handed. I am a rightie, but fairly ambidextrous. I play hockey and golf leftie, and I am a switchhitter. Batting they say is the dominant eye forward is more important. There have been many MLB players who are rightie, but bat leftie. But one of the rarest things in baseball is a player who is a leftie, but bats rightie. Great trivia question- who is one of the only lefties who bats righty in MLB history?
Rickey Henderson