So if they hit Mauer for Casilla, doesn't he just get walked? And when you can score a run with an out, do you let Casilla hit for that reason (when considering that bringing in Mauer causes some "strange" defensive shuffling if there's extra innings)? As it was happening, I was thinking Mauer for Dozier instead of Casilla because of the "you can win with an out with Casilla up, but not Dozier" factor. If they HAD gone Mauer for either of them, does that make Masto go to 2B? And do the Cubs walk Mauer even if he hits for Dozier leaving Mastro as the pivotal batter? That was certainly a "if this happens, then what happens next" moment. Lots of things to consider.
Also, as I was watching without sound and not where I could pay full attention, would Carroll have been safe at third had he not slid past the bag?