I wonder if analytically, it's actually an advantage to have all starters of the same throwing hand. Part of the equation would be hard to quantify (the coaching part), but stay with me here Teams are platooning more than ever. Teams are doing it because they feel they can play matchups and over the course of a season derive a net advantage my playing players against the opposite handed pitcher. OK. Makes sense. But what is a manager going to do if there's no opportunity to platoon? Is he going to sit the bad matchup all three games of the series against us? Doubt it. I would think that at least one of those games, he'd feel the need to play the lesser matchup, to "keep his guys fresh" (or whatever coach-speak he might use). If the Twins had a series against 3 lefties, would Molitor sit Kepler, in favor of Grossman for the whole series? Doubt it. Also, do we think it's a coincidence that Cleveland, where Falvey came from had all RH pitcher at the end of his time there (and still).