Revealing mistake: When Chris is playing the computer game at Doughboy's house, the gun he is using has no cord going from it into the console.
Revealing mistake: When the bullies return and scatter the crowd with gunshots, there's a young man in white on the right of the screen. He remains on the sidewalk and appears to be in another world.
Answer: It symbolizes that he used to be a football player just like Rick wanted to be at that age. But probably due to the cards he was dealt he gave up on that dream. When they emphasize the man in the feel its like showing empathy to the kids because he sees himself in Ricky, thus giving the ball back.