One ball to represent all sports is tricky. And not all sports films can be represented with a ball (think boxing). And some of the more interesting balls don’t have a lot of movies around them (think golf ). But I like basketball. I like the look of a basketball. I like playing basketball. My love of it as a tangible thing overrides the fact that I usually have gotten more into boxing movies. But, regardless, for me, it stands for the rest of ’em.