Sandy had to throw the ball over 100 mph many, many times during his career. HOF Richie Ashburn said that Koufax either threw the fastest pitch he has ever seen, or he is going blind. Pete Rose, who had over 15000 total plate appearances and faced hundreds of pitchers during his career, said that Koufax was the hardest thrower he ever faced. It's been reported that some umps actually didn't see some of his pitches and made the call on the sound of his pitch. Willie Mays is on record as saying that he couldn't hit Sandy Koufax, and he knew every pitch he was going to throw ...