Why won't the Reds use Aroldis Chapman as their closer?

I remember when I saw the movie Amistad, I was frustrated that Steven Spielberg didn't use his cast effectively.He gave several of the movies biggest and most emotional moments to Matthew McConaughey... and as I wrote before, McConaughey is good at SOME things, but he was out of his element delivering the big moments.Meanwhile, Morgan Freeman was in the cast and given virtually nothing to do. Now