Who does Don blame as he begins to pity himself ecause his own poor play results in his getting fewer opportunities to carry the ball at running back?

On this day, as the Panthers play El Paso Austin, Don's game falters. Coach Gaines replaces Don with Chris Comer at fullback, and Chris plays a flawless game. Don, humiliated and angry, laments how a ‘nigger’ like Comer is favored at Permian.