"I was known for my fastball and curve and did well with just those two pitches, but people don't know that I tried to add a third pitch, any third pitch. For a long time, I tried to learn the changeup. The Dodgers taught the changeup in a certain way - it was the Dodgers' changeup - and I tried to learn it for ten years but never got the hang of it. I never liked my changeup, and I never wanted to throw it. One day, I was playing catch and started to fool around with the forkball, and it felt more comfortable to me. I said, "Well, I'm gonna try this instead of the changeup." So I started to throw it, but I only used it occasionally in games, because I didn't throw it hard enough.I also threw the slider a couple of times. I threw the slider to Henry Aaron and Roberto Clemente, because I figured if it worked on those two great hitters, then I had something there. So I threw it to Aaron and almost hit him in the face. He reached out to get it, and it came right at him. And I threw it to Clemente. You may remember that in Forbes Field in Pittsburgh, there was a light tower by where they used to park the batting cage. Halfway up. there was a bunch of transformers. Well, Clemente hit it off a transformer. I said, "Well, maybe I don't have a slider," and I gave it up. So, I never came up with a third pitch."