"But I went over to the other league, and, at that time, it was a little better than the American League. I think the difference was that the National League had more guys that could run, throw, field, hit and hit with power. The American League had a lot of guys that could hit the ball with power – Killebrew, Jim Bob Lemon, Roy Sievers – but they weren’t complete players like Clemente and Robinson and Mays and Aaron."
January 1, 1970
https://en.wikiquote.org/wiki/Roberto_Clemente