Diamond Nine Athletics

Diamond Nine Athletics is the pitching analytics app built for serious players and the coaches developing them.

Upload your Rapsodo or Trackman session in seconds. Watch your max velo, average velo, spin rate, spin efficiency, induced vertical break, horizontal break, vertical approach angle, extension, and release height come to life across every pitch type you throw.

For Athletes: • Drop in a CSV export from your bullpen — your stats parse instantly • Track every pitch type separately (fastball, slider, curveball, changeup, cutter, sinker) • See your strike zone heatmap, release point consistency, and pitch movement profile • Watch your progression over time on every metric • View your personal bests by pitch type • Stack up against every other Diamond Nine athlete on the leaderboard • Receive your training plan from your coach, day by day

For Coaches: • Manage your roster from one place • Build week-by-week training plans on a full month calendar • Bulk-assign drills to multiple athletes — repeat across weeks in one tap • Build a personal drill library that auto-suggests as you program • Watch your athletes' progression, ranked side by side on the dashboard • Send custom video drills, YouTube links, or your own clips • Get alerted when an athlete falls behind on the day's training • Export professional PDF reports for college coaches and scouts

Built for High School, College, Travel Ball, and Pro pitchers. Diamond Nine is private by design — your data stays yours, only your coach sees what you choose to share.

Diamond Nine is for athletes 13 and older. Built with input from working pitching coaches.