Time to decorate and left handed?

Well tonight Edward and mommy started to decorate for halloween, see pictures below. Edward loved to stick the decorations to the window.
After that, mommy and Edward went outside to play some baseball, and Edward is of course able to swing and hit the ball off the tee. However, to our surprise he has decided, on his own, to swing left handed... Weird, I guess, but he chose it.... See pictures below