[Curtis]

I'm being strictly anecdotal here. What you're seeing for K-rates and pitchers' batting average is right in line with what I would expect. I would expect the pinch hitters' batting average to be eighty to one hundred points higher (era dependent) and their home run rates to be… much, much higher.

According to 'the boys in the booth' (Keith, Ron and what's-his-name) during the Mets' games, pinch hitters should be going to the plate with the mindset "I may not get another appearance for a week, so I'm by God going to take my cut!" They shouldn't be choking up when they get two strikes, they should never bat defensively, and they should always have one eye on the fence. In my mind that would translate into maybe a 50% increase in strikeouts, but also a similar increase in home runs.

And remember that usually (dependent upon the strength of your ball club) pinch hitters are guys who aren't good enough to crack your starting lineup, so they may have poor power or high K-rates to begin with. If you're lucky enough to run a solid platoon system, then that wouldn't apply, of course. Concomitant with that, on most teams pinch hitters don't get many at bats, so they might be thought of as perpetually rusty. Again, if you have a solid platoon system in place that wouldn't apply.

Even with all that, unless you're playing deadball I would expect MANY more home runs than you're seeing.