What song is this?

its the song off of the movie "sandlot" its about a group of kids that play baseball in the 50's that believe there is a giant bulldog behind a big wooden fence and are afraid to go near it but one day they hit a baseball with babe ruth's signature on it over the fence and gotta do whatever it takes to get it back. but anyways the song plays in the background when they confront a rival baseball team in a courtyard and challenge them to a game.