Sentry6
14 Measured Pitching Stats
Pitch Start
The digital standard to start of the pitch is when the pitcher is finished visualizing the pitch and starts the motions to deliver a pitch
Pitch End
The ball release point is digitally considered the end of the pitch: fastest speed of the knuckles during the pitch
Pitch Duration�
Pitch Duration calculation starts when the pitcher starts moving after setting up the pitch and ends when the pitching knuckles are at their fastest speed during the pitch�
Max Palm
Speed
Palm speed value indicates the highest speed achieved at the middle finger knuckle (the fastest moving point on the body during a pitch, ignoring the finger speeds). The palm speed at the release point is the closest speed to the ball speed at release point.
= Fastest knuckle
joint speed
Max Forearm
Speed
Forearm speed value indicates the highest speed achieved at the center of the wrist joint during the pitch
= Fastest wrist
joint speed
Max Arm
Speed
Arm speed value indicates the highest speed achieved at the center of the Elbow joint during the pitch
= Fastest elbow
joint speed
Max Shoulder
Speed
Indicates the highest speed achieved at the center of the shoulder joint during the pitch
= Fastest shoulder
joint speed
Max Wrist Angular
Velocity
Wrist angular velocity is derived from the angular measurement between the palm and the forearm. The knuckles speed at the release point is the closest speed to the ball speed at release point.
= Maximum wrist joint
angular velocity
Max Elbow Angular
Velocity
Elbow angular velocity is derived from the angular measurement between the forearm and the upper arm.
= Maximum elbow
joint angular
velocity
Shoulder joint angular velocity here is derived from the angular measurement between the upper arm and the pitcher’s ribcage
= Fastest shoulder
joint angular velocity
Max Shoulder
Angular Velocity
Max Chest
Angular Velocity
The maximum velocity the ribcage pivot achieves around its center during the pitch
= Fastest angular
velocity of the
Ribcage pivot
Vertical Axis
Max Hips
Angular Velocity
Z Axis
The maximum velocity of the Hips in its pivot around its center
Shoulder
Separation
Length of time between the peak angular velocity of the Hips and the peak angular velocity of the Ribcage
B
Shoulder-tip
Separation
Length of time between the peak angular velocity of the Hips and the peak angular velocity of the shoulder only
B
A
B
= Angle between
lines B and C
at release
How open is the elbow angle at release, in reference to the elbow starting at 90 degrees (line C)
C
Forearm Tilt
90
Elbow Height
A
B
Distance between Elbow joint height
and shoulder joint height at release
The height of the elbow joint in reference to the shoulder joint height in reference to the longitudinal axis of the ribcage, at release