The throw data was captured by Wilson Sporting Goods. Metrics were collected through a variety of drills during the Wilson QBX combines where players threw footballs using Wilson QBX tracking technology embedded in each ball. More information can be found here - https://www.wilson.com/en-us/explore/labs/connected-football-system
Elite HS/College QB Averages | Taryn Blocker Data
Throw Release Time (s): 0.45 |.49
Throw Velocity (mph): 44 | 38.4
Throw Spin Rate (rpm): 612 | 702
Throw Spiral Efficiency (%): 80 | 74