My husband would know if he played well. Not I. But I did watch him at bat once, and he was walked. My husband kept saying, "Look, he's towering over the ump!" I think he may have to be careful to watch his weight, though. Then I think he was playing first base, but I didn't see him make any plays.
Btw, a pitcher on the same team was 6'3" and he had a goatee. (I'm not suggesting their ages are questionable, just pointing out how vastly different boys can be from each other at that age).
Adding: I'm sure he made some plays. I myself didn't see them. I didn't watch the whole game.
It does look very weird, but so many young preteen girls these days look 20. Stands to reason that some preteen boys are being affected by whatever's making those girls grow up...