DD is just moving up to be a 16U pitcher; one of her good friends is a year-older catcher who will be on the same showcase team this year. Having a friendly debate with the kid about how many changeups to call. As an aside it drove me nuts this season with our catchers (not my daughter's friend, who was in an older age group this season) that they never called offspeed despite the fact DD has a very good one - we played a game in northern NAFA, for example, where she threw 71 fastballs and not a single changeup. One team beat us twice on the same day; their pitchers threw probably two changeups per AB.
My DD's friend says "I can tell when it's time to call a changeup - when the batter hits a really good foul ball!" IMO that's too late. I know it depends on a lot of factors, but what's an approximate percentage of pitches to be offspeed (at our 14U level most pitchers have a fastball and a change; a few have a third pitch (normally a riseball)? DD throws two fastballs and a change and is picking up her riseball.
My DD's friend says "I can tell when it's time to call a changeup - when the batter hits a really good foul ball!" IMO that's too late. I know it depends on a lot of factors, but what's an approximate percentage of pitches to be offspeed (at our 14U level most pitchers have a fastball and a change; a few have a third pitch (normally a riseball)? DD throws two fastballs and a change and is picking up her riseball.