I found the football field I was thinking of. It is in Pam Bono's book "Quilt it for Kids". I don't think it is the one you saw, though, as it doesn't have any names on it. This one has the palying field with a helmet in the center of the field, goalposts at each end with a football on each side of the goalposts, with three wide borders. The three borders have megaphones all along them. It is really cute, and it wouldn't be hard to modify it to include block-letter names on the ends, like you want.
Did you find the one you previously saw?