In case you haven’t seen it yet, go check out Mike Fast’s analysis of catchers’ abilities to get borderline strike calls, expanding on work done at Beyond the Boxscore. There’s margin for error, but Fast suggests that the best catchers could earn their teams as many as 15-20 runs a season with the opposite true for the Jorge Posada end of the spectrum. Also: Jose Molina is awesome at it.

Because you’re wondering: By Fast’s data, both Josh Thole and Ronny Paulino have been slightly above average at getting borderline strike calls. I wonder, though, how knuckleballs — a significant portion of the pitches Thole has caught in the last two seasons — affect the outcome.