I would believe it is likely that the Twins would think they could coach a player into being better. I once read that the best number of net calls per game was about 2.5. Maybe on a game by game basis the Twins feel the framing effect is negligble In pitch framing there are data showing differences for each pitcher, umpire, home vs away, inning, pitch type and location, ball and strike count, as well as catcher. There have been no studies that I could find that say who the batter is matters, ie are there more close pitches thrown/called on a Joey Votto versus David Blarney or a N.L. pitcher. There are enough AB where there is a pitch that is called a ball that was a strike, a strike that was a ball, and every pitch correct that there should be a set of data for the OPS for each condition. You could do it for each pitcher. What would the data show?