A bit off topic but I think people make a lot of assumptions about lefties that just aren't true. For example, people think that a lefty naturally has more movement on the ball than a righty. I doubt that very much. My opinion is that because hitters don't follow the ball all the way from plate to release and because they are used to the tail on a righties pitch in their minds they see a righties tailing fastball as coming in dead straight. On the other hand since their mind has built in an adjustment for a righty's tail when they run into the tail on a lefty's fastball it looks like it is moving twice as much as it really is. It wouldn't surprise me if there are a few longtime mlb hitters who have learned to process pitches differently depending on if the pitcher is a righty or lefty.
If you doubt this try to remember back to when you were a kid facing kid pitchers. Fastballs came in dead straight. Yet now if you go watch from the side at kids that age pitching, you can see a big arc in the pitch. That's because we see the ball at release, we lose it and then we pick it up out in front of the plate a ways. Our mind fills in the interval as a straight line.