By my very quick count, of the 97 starting pitchers who currently qualify for ERA leaderboards, 23 are lefties. Not going to count relievers, but managers are so fond of bringing in LHP to face LHB late in the game, I wouldn't discount Gennett's inability to hit lefties so much. Edit: Actually, just looking at guys who play everyday regardless of what hand the opposing pitcher throws with, it seems that LHPs account for just about 25% of all ABs. I'm not discounting it. I'm not really a fan of Gennett anyways. Just saying that if I could get solid production 75% of the time that would be better than getting production maybe 25% of the time.