It would have been a good image whether the players were black or white; the reference is to one man's job being only to feed the one who does the important job. Of course, it is not racist. Reginald D Hunter, a black comedian, has often observed that there is such a paranoia among 'white folks' about appearing racist that he gets white people coming up to him and asking "If I say/do this, is it racist?" . He began to wonder if he was racist,by their confused standards, since bumping into another black man in the dark of a cinema he said "I didn't see you!"