EL PASO — It’s third down and eight and wide receiver Isaac Perez needs to make a play for the Burges High School football team. He just hopes he can see the ball. For Perez, the play won’t be just pitch-and-catch like it is for any other player. Catching the ball and running for the touchdown is a process of complex decisions that are made from the moment of the snap, to the instant the ball leaves the quarterbacks’ hand. Perez has to twist his body so that his right side faces the incoming pass.