I wasn't around during his days of pitching, but I seem to always hear stories of Bob Gibson not being afraid of drilling someone square in the back. I think just about all the pitchers from yesteryear were head hunters in a way. The inside pitch was a HUGE weapon back in the older days of baseball. They didn't fear getting thrown out or suspended back then the way they do now. A lot of it was just reputation. IIRC Gibson didn't hit all that many guys compared to today's pitchers. Averaged one more per year than Maddux in 30 more innings per year. The difference may be how many were offspeed pitches that got away and intentional fastballs between the numbers.