So, let me get this 3rd catcher theory straight. We keep a 3rd catcher on roster for two potential scenarios.... Scenario 1) One of our catchers is catching and the other is DHing. The guy that is catching gets injured, so the DH needs to get pulled into the game, "eliminating" the DH and causing the pitcher to get placed in the batting order. If this happens early in a game, it COULD mean that the pitcher spot would come up several times over the course of the rest of the game. To avoid this 1/50 chance we are now batting Hermann, who is worse at hitting than an average MLB pitcher, several times EVERY game. Under normal circumstances, where the 3rd catcher just sits on the bench week after week, having this player prevents a legitimate late inning PHer from being on the roster, who could have an impact on many games per week. Scenario 2) One of our two offensive juggernaut catchers gets an off day, but is available to PH. Late in the game we use him to PH. THEN our starting catcher gets hurt, leaving us needing to use our emergency catcher, presumably for no more than an inning or two. To avoid this "once every 5 years" chance, we are currently using our 3rd catcher in the OF, but he's not any good, and he's one of the guys who we would pinch hit for, so we haven't really avoided this "problem." Under normal circumstances we carry dead weight on our roster so that Eduardo Escobar doesn't need to play catcher for an inning once every 5 years.