Linkat wrote: I noticed one pitch as fast as 81 mph.
Err, I hope you mean 91 mph.
Actually, the speed is somewhat deceptive. The ball moves as it comes toward the batter, so the speed is counterbalanced by the elusiveness of the ball movement.
As a result, the speed is useful only in the context of the pitcher himself. One pitcher might be great as long as he hits 90 mph-his movement is that good. Another pitcher might be only mediocre at 95 mph.
At his prime, Garry Maddox only threw 90 mph. Ball movement was the key. Near the end, Ron Guidry had some days he could throw 94 mph. But he had to soon retire because of ineffectiveness.