Just wondered how common this is.

We take my son to sports club (he's 5) on a saturday morning. He is right handed when it comes to writing, holding a paint brush, using his various swords etc.

However, give him a cricket bat and suddenly his left hand is the dominant one and he smashes the ball beautiful going left-handed.

Is this a common thing? I've not seen it before but I could just be totally missing a common hting.