Rudy terrible soccer skills
For a kid who supposedly played soccer "all the time", the kid could not kick a soccer ball to save his life!
His kicking was so cumbersome and typical of someone who is "pushing" the ball (not kicking) with their feet for the first time.
OBVIOUSLY the movie is not about this and this is relatively un-important but it just shows some poor attention to detail when they could have had the boy practice a TINY bit and seem more believable...