Greenmonsters
Wannabe Duck Boat Owner
We started talking about it in 10u and let them go full time in 12u.
Coaches that call pitches have control issues (not saying they are bad people).
Calling pitches is not a skill. Research has shown even at the MLB level calling pitches is random chance.
If it were a skill some players/coaches would be better at it than others (or random chance). That fact is (no matter what they want to believe or tell you) they are not.
Hope that helps.
I'd really be interested in the research you reference. I don't see anyway that this could be evaluated other than simply looking at hitting results v. certain pitches in certain counts and would have to involve numerous asssumptions about pitch location, quality of pitch, speed of pitch, prior pitches, prior at bats, prior sequences, etc etc etc etc etc