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Lefty/Righty Splits


Lefty/Righty Splits

Does anyone have a sense of what percentage gain players get facing the opposite handed pitcher?

Re: Lefty/Righty Splits

I believe, not positive, that what I have read is it makes little difference. I have actually seen Lefty batter do better against lefty pitching.on occasion. I did read somewhere that it has little effect, not none. Just little. If I am wrong someone here will correct me, thankfully.

Re: Re: Lefty/Righty Splits

it's in the 10% range... so it can make a difference over a large sample size, but obviously it won't always play out that way.

Re: Lefty/Righty Splits

It also seems that a smaller number of guys have no difference at all vs R/L, or even reverse splits in some cases. I'm assuming this is somewhat randomized so we can't just assume everyone is better vs oppo-handed pitchers? Whether it's deliberate or not, it's fun to manage your team with custom lineups for R and L handedness.

Re: Re: Lefty/Righty Splits

I try to do it whenever I can ; but , it's rare that I have two players who are equal or close enough in rank , DWAR & hitting ability to pull it off.

Re: Lefty/Righty Splits

What I've seen matches what Guy said:

* lefty vs. lefty and righty vs. righty get about a 5% drop vs. baseline
* lefty vs. righty and right vs. lefty get about a 5% boost vs. baseline
* about 70% of plate appearances will end up against a right-handed pitcher.

YMMV

Re: Re: Lefty/Righty Splits

I'd love to know the actual variables. Because the same rate for righty vs righty and lefty vs lefty doesn't quite make sense. Right handed hitters compile their stats facing a higher percentage of same handed pitchers so their penalty should be less. But I've been unable to find the typical percentage in real baseball - is it 70% right handed pitchers? What about the percentage of right handed hitters? You'd have to know that before applying a blanket penalty or bonus.

In the past right handed hitters were vastly inferior in pennantchase - guys with the same stats say... Lefty O'Doul and Harry Heilman would compile much different stats like .900 OPS vs .750.

I think it's better now but still wonder what the numbers are behind the splits.