Tye
Briscoe

The maximum speed, in the direction of home plate, that the wrist is traveling. Measured in meters per second (m/s)

The angular velocity of the front knee straightening after foot plant, which provides indicators of velocity potential. Measured in degrees per second.

The amount of time that the ball is visible to the hitter, after the instant of front foot strike. Measures in milliseconds.

The difference in angle of between the hips and shoulders, occurring close to the foot plant. Measured in degrees.