As far as the trade itself goes, lots of folks have made these thoughts, but in no particular order: - Contreras might be out for an extended period, although early reports are this is unlikely - Caratini might be on his way out the door in another trade, which would be good business, IMO - Maldonado is a playoff-oriented addition, he's not going to be much of a pinch hitter but he's able to fill that Ross gap in a way that Caratini can't. Especially on a playoff roster, you can use a defensive catching replacement easier than you can use your 5th best pinch hitter - Montgomery has fallen out of favor with the team. He's having a bad year, he's not particularly young or far from FA any longer, even at his best he was never murder on LHP which means his primary value is as a swingman, which the team already has Chatwood and Alzolay to help with(plus more help in future seasons from the farm than in the past) I think it's probably a pretty proportional combination of those 4 factors.