I saw something on "Sports Science" that showed the geometry of pitching, and theorized the higher the point of release for the ball, the less time it spends in the strike zone. Hence, a taller pitcher would have a slight advantage.
If you look at the all-time strikeout leaders, no one in the top ten was shorter than 6'1. Pedro Martinez (5'11) is the only one in the top 20
listed at under 6'0.
I've always heard the term 'ape index' when referring to rock climbers. Some believe a dis-proportionate 'wingspan', is what separates the best climbers from the rest.
Does anyone know if Pedro Martinez has super-long arms?
I'm 6'1. My ceilings are mostly 8 feet high. I can only reach about 7'7. I have to stand on a chair (like a girl) to change light bulbs. My friend is 5'9 or 5'10. He can change the same light bulbs without a chair. He has the much greater ape index. If we were pitching prospects, he would have a higher 'point of release' than I. So, in theory, even though I am 4 or 5 inches taller, my friend has more potential to be the better pitcher.
I know it's all about what you do on the field, but I do think some people won't consider shorter pitchers. Perhaps, parents of 'shorter' pitchers could measure their sons' wingspans and, if their ape index is high, point out to scouts and college coaches, "yeah, he's 5'10, but he releases like 6'4." (embellished slightly, of course
)