Something I hadn't paid much attention to before was the catcher's actual fielding percentage. I'd seen OOP catchers put up awful numbers in some strange theme leagues, but anyone who actually played some catcher didn't seem to fare too badly.
But I apparently wasn't paying close enough attention, because Buck Ewing might just be my downfall here. I used the 1892 version to great success on a recent 100M, and when I was searching for catchers for the 90M here his 1887 year popped up because of the lower fielding grade. He had an A- arm, his salary fit, and he looked pretty solid to me.
In fact, when I built the 120M team his name showed up again and I took him a second time. ...
Turns out, he had an .818 fielding percentage as catcher that year, something I hadn't looked at. He. Is. Killing. Me.
In one league he has 12 passed balls and 4 errors in 9 games. In the other, 6 passed balls and 1 error in 7 games. He's giving runs away left and right. He makes up for it some with his bat and he throws out some runners when he doesn't chuck it into center field, I guess. Nothing to do now, though.