...or it could be that batters had lower OPS #'s because the pitchers were better. They had better and more consistent secondary pitches. Among other reasons, there was no DH. Batters didn't dare dig in the batter's box. Many guys were still not wearing helmets and those that did wore little skull cap helmets with no protective ear flaps. If you watch films from the 50's and 60's you'll see batters bailing out against curve ballers, because they were more vulnerable. There was no body armor on batters. In the 50's and 60's managers insisted that everyone except maybe the number 3 and 4 hitters give themselves up and hit the ball the other way to move a runner along. Are hitters better today than back in the 50's and 60's. Yes. They are bigger and stronger, but so are the pitchers. It's ridiculous to think that batters have evolved in size and strength at a different rate than pitchers. Everything is relative. Today bigger stronger batters bat against bigger stronger pitchers. The difference is that pitchers are conditioned differently than they were 40 years ago.