Your optimal ranges

Coach's note: 5.2–5.8 efficient; example athlete 4.28 peak linear speed. Units as 4D exports them.

Not mapped: 4D's "Upper Arm angle - Foot Plant" reads about 60° on real files, a different zero point. Coach to confirm.

85°–90° marked too much.

Not mapped: 4D's "Chest - Peak Opening Rotation" reads −16° to −29° on real files, a different zero point.

Coach wrote ~30%. 4D exports this as a fraction (chest ÷ pelvis peak speed − 1), so it is shown × 100.

Not mapped: 4D's "Pelvis/Chest - Peak Closing Separation" reads 80°–87° on real files.

Not mapped: 4D's "Pelvis/Chest Separation - Release" reads about −80° on real files.

3,300°/s = very elite. 2,400°/s marked efficient middle-pack for a young pitcher.

Coach wrote 300,000°/s² as the target/reference value.

8°–12° marked not enough. Not mapped: 4D's "Elbow - Bend" reads about −100° on real files.

Not mapped: 4D has chest side bend and forward bend at foot plant; coach to pick which one this is.

12°–13° backward noted as undesirable. Not mapped: coach to confirm the 4D column and its sign.

−18° to −20° best; general range 12°–24°. Not in 4D's metrics export (no top-of-circle event).

Example −14° → +17°; +17° marked too much. Not in 4D's metrics export.

10U: average 32–36 mph, good 37–40, elite 41–44. Every pitch except the changeup. The chart does not say how it was measured; its 18U numbers agree with the Diamond Solutions / Rapsodo high school scale (senior 60+).

12U: average 38–42 mph, good 43–47, elite 48–52. Every pitch except the changeup. The chart does not say how it was measured; its 18U numbers agree with the Diamond Solutions / Rapsodo high school scale (senior 60+).

14U: average 45–50 mph, good 51–55, elite 56–60. Every pitch except the changeup. The chart does not say how it was measured; its 18U numbers agree with the Diamond Solutions / Rapsodo high school scale (senior 60+).

16U: average 50–55 mph, good 56–60, elite 61–65. Every pitch except the changeup. The chart does not say how it was measured; its 18U numbers agree with the Diamond Solutions / Rapsodo high school scale (senior 60+).

18U: average 54–58 mph, good 59–63, elite 64–68+. Every pitch except the changeup. The chart does not say how it was measured; its 18U numbers agree with the Diamond Solutions / Rapsodo high school scale (senior 60+).

College: average 56–60 mph, good 61–64, elite 65–70+ (freshman). Every pitch except the changeup. The chart does not say how it was measured; its 18U numbers agree with the Diamond Solutions / Rapsodo high school scale (senior 60+).

≥ 1,325 rpm is the source's "green (raw spin)" line: above average on a college scale. Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 1,200 rpm is the source's "green (raw spin)" line: above average on a college scale. Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 1,500 rpm is the source's "green (raw spin)" line: above average on a college scale. Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 1,425 rpm is the source's "green (raw spin)" line: above average on a college scale. Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 1,350 rpm is the source's "green (raw spin)" line: above average on a college scale. Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 21 above average (college scale), < 17 below average (high school scale). Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 20 above average (college scale), < 16 below average (high school scale). Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 23 above average (college scale), < 19 below average (high school scale). Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 23 above average (college scale), < 19 below average (high school scale). Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≥ 21 above average (college scale), < 17 below average (high school scale). Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

≤ 18.5 above average, > 23.5 below average; low spin is usually better for a changeup. Rapsodo scale; PitchLogic measures spin the same way (rpm), but it is a different device.

Simple statistic the app works out from her tagged FB and CH pitches. No target yet.

Standard deviation of fastball speed in one session. Lower = more repeatable. No target yet.

How much speed drops across a session. No target yet.

Pitch-type grades only work when pitches are tagged. The team file is about 62% tagged today.