Phillip D'Amato is a friend of tommy grayton and Sonny Koufax. As it appears in the film he is also gay. The evidence is that he kissed tommy grayton, and in one scene their in a public bathroom when someone is next to him urinating, and he looks at the other guy's penis, but when he looked away the person moved to the next urinal. Although he is gay, it doesn't bother the characters.

he is the friend of tommy grayton and also sonny koufax

he also is a gay type he kisses tommy grayton is friend