Catchers with Grandal and Contreras' workload receive ~8000 pitches a year. Even if we throw out 90% of pitches as unimpacted by framing and say that the difference between the best and worst in that remainder is like 20%, that's still ~160 calls a year one is getting that the other isn't. Is it really so hard to think at the extreme ends of the spectrum(and when we talk about Grandal v. Contreras that's what we're talking about) that magnitude can add up to multiple wins? If you want to quibble with the exact degree that Contreras or any alternative is good/bad that's fine(that's what message boards are for!), but scoffing that the very idea that the Cubs could be better off without Contreras is closer to an uncritical rejection of framing as a potential source of value. Pretty much this. I'm as skeptical as anyone about what the actual impact of framing pans out to be, barring extremes. But these are the extremes and I definitely think there's a significant and tangible difference. That said, with the Grandal option off the table, I think I'm fine taking the trade off with Contreras and keeping him. Depends on the return, obviously, but if it isn't good, I'm not about shipping him off just for something decent in the name of getting a good framer in there.