17 Co. is a baseball performance brand founded by former professional baseball players Casey Harman & John Nester.

John and Casey have over 11 years of combined professional playing and coaching experience, as well as training players of all ages for over 10 years.  Casey has developed pitching programs and helped numerous players reach the collegiate level and has also helped train both Minor League and Major League pitchers.  John, who is currently the catching coach with the Padres has trained catchers and hitters and has also seen many players reach the collegiate level as well as helped current professionals get closer to their dream of playing in the big leagues.    

Our goal is to help you DOMINATE THE PLATE.