batboy n. (Baseball) A boy who holds the bats and presents the bat to a batter when the batter is going to the batter's box to bat. The batboy sometimes also keeps other team equipment.
... game for us and before five innin's had come and went, I found out that the only thing iron about him was his nerve in drawin' wages as a pitcher. Everybody connected with the Philly team but the batboy got a hit and from the way them guys run around the bases it looked more like a six-day race than ... — Alex the Great • H. C. Witwer