In American English, ball game refers specifically to either a game of basketball, baseball or American football. In British English ball game refers to any sport played with a ball.
Famous quotes related to ball game:
“Any balance we achieve between adult and parental identities, between children’s and our own needs, works only for a time—because, as one father says, ‘It’s a new ball game just about every week.’ So we are always in the process of learning to be parents.”
—Joan Sheingold Ditzion, Dennie, and Palmer Wolf. Ourselves and Our Children, by Boston Women’s Health Book Collective, ch. 2 (1978)