Free Coaching Tools
These tools were built over eight years of coaching — Little League, travel ball, middle school, and high school. They're the paper layer that predates DiamondMetrics and still works alongside it.
In-Game Tracking
Best for in-game pitch tracking by coaches, parents, or players in the dugout. Tracks up to 40 pitches per sheet with velocity, pitch type, location, and a running count of strikes and total pitches.
The sheet has four columns of 10 pitches. Work down the first column for pitches 1–10, then start at the top of the second column for pitches 11–20, and so on. The columns are a continuation — not four separate data streams. The numbers 1–40 in the margin confirm which pitch goes where.
For each pitch, record:
X = swinging strike/ = called strikeF = foul ballO = ballBelow each column, record Strikes / Total pitches for that column. At the end of the inning, three fields give you the complete picture:
Recorded by — note who filled out the sheet. Strike and ball judgment can vary between recorders, so it matters for later review.
At the bench between innings for in-game use — sit with the pitcher and catcher and review the sheet together. Then photograph it for your records and hand the paper copy to the player. They might have a further discussion themselves and can review it after the game, too.
Full background on how this sheet evolved through four versions: Coaching 201: Pitch-tracking sheet on Old Men Playing Baseball.
Bullpen Tracking
Best for practice bullpen sessions, tracked pitch-by-pitch with velocity, type, and location. Designed for 20 pitches — consistent with MLB PitchSmart guidelines for pitchers who need to throw the next day.
Each pitch is numbered 1–20 so parent or player recorders stay in sequence. For each pitch, record:
The bottom of the sheet has space for session notes. Record ball/strike ratios by pitch type and velocity range (outliers in parentheses). Add a coaching cue or summary observation. At the end of the session — or at the bench between innings for in-game use — sit with the pitcher and catcher and review the sheet together. Then photograph it for your records and hand the paper copy to the player. They walk away with a tangible record of the work; you have the photo alongside the electronic data.
The bullpen sheet was designed to complement these tools. PocketRadar gives you immediate velocity for the sheet; Rapsodo and PitchLogic capture spin, movement, and either release location or arm slot data separately. At the end of the session, photograph the sheet and have it for reference. This is the manual version of what DiamondMetrics does automatically.
The complete workflow — setup, timing, technology integration, and how to run a bullpen session: Coaching 301: Bullpen Tracking on Old Men Playing Baseball.
DiamondMetrics aggregates data from Rapsodo, TrackMan, PitchLogic, GameChanger, and other tracking systems into a single persistent player record. These sheets exist for the moments when the technology isn't running — or for the coaches who are just getting started with data.
Paper doesn't aggregate. Paper doesn't trend. Paper doesn't follow a player from freshman year through senior year. But it works anywhere, costs nothing, and gets data into the hands of coaches who wouldn't otherwise have it.
These sheets are where DiamondMetrics started. They're free. Use them.
DiamondMetrics is currently in early access with a small group of coaches and facilities. If you're serious about player development and already using tracking technology, we'd like to talk.
Request Early AccessCurrently integrating Rapsodo · TrackMan · PitchLogic · GameChanger · ArmCare