Velocity increases during the season

I think, my opinion, is velocity moves in steps.  So during a season you can be 80-85.  So early you may be 80.  And mid season closer to 85.    But to jump to the next bracket, 85-90 takes the offseason work.  

Don't forget that many PG players are quite young and still experience natural growth.

A 16 yo might very well an inch taller and a couple pounds heavier just from natural growth. Also many players won't work out as much as Kyles guy do. 

If the guys take their recommended two months off throwing and then just play a few weeks of catch and lift twice a week before getting on the mound again the game and side bullpens might be enough stimulus to gain velo in season.

We have seen many pitchers gain velocity.  This includes pitchers we have seen at the PG National in June (after the HS season) then seen again in August at the PG All American Classic and/or PGWWBA in Jupiter in October.  This is all documented.  Probably due to mechanical adjustments, growth, or just feeling better from one outing to another.

However,  not sure what all of that means.  Pitchers vary in velocity a little bit from one outing to another.  So we have also seen the complete opposite happen to some pitchers.

All that said, I do think it is true that "most" young pitchers improve the most during off time.  Of course that has a lot to do with what they do during that off time.  So those guys are correct and know what they are talking about.  People would be wise to listen to guys like Boddy, Cressey and Ron Woolforth  It's just the word "ALL" seldom fits when talking about baseball players or athletes.  There actually are some HS pitchers gain velocity from the beginning to the end of a season.  And there are many cases where college pitchers end up throwing with their highest velocity in the summer leagues, like Cape Cod.  It even happens in professional baseball.

I have never had easy access to a gun.  It would be interesting to track.  Based on the few times my son has been gunned it has always been faster than the previous.  He has also physically grown every year.  This might be the first year he hasn't change 2-3 shoe sizes over a 12 mth period.  Last spring he was gunned at 78.  Over the summer he started a very specific long toss program between starts for recovery and arm strength.  By the end of summer his velocity was obviously significantly up.  Of course I never got him on the gun to verify.  Curious to see where he is sitting this spring.