In another thread, I speculated that right handed hitters have less severe platoon splits. I suppose there are stats somewhere that either validate my thought or or refute it.
I checked the platoon splits of top Twins hitters and found that right handed hitter splits were less severe than for left handed hitters. I checked the top four left handed hitters in Twins' history and the top three right handed hitters in Twins' history plus Paul Molitor and checked their career OPS splits. All eight hitters hit better with the platoon advantage. Of the top lefties, only Rod Carew had a disparity of less than 100 OPS points and Tony Oliva had a spread of .200 (.890 vs. RH pitchers, .690 vs. LH pitchers).
All time great right handed hitters didn't have splits as great as the lefties. Kirby had a disparity of .094 (largest) while Harmon Killebrew had the smallest--.058.
If somebody has more information on this topic, I'd like to see it. It might explain some of Rocco's willingness to pinch hit for Wallner, Kirilloff and Julien early in their careers.