Josh Gessner
Building Big Leaguers.
by using your back leg
here's everything I found
in the next 30 days
If I Had To Start Again
as a baseball player
in 2 years
we've never done this before
it'll ruin your baseball career
unless you do this
I gained 16mph in 16 months using this
in 90 days
even if you're 16 and throw 78mph
