Importance of Metrics
Metrics actually might seem to be a new thing but it has been around for a long time. Using a stopwatch to determine running speed is a form of metrics and that has been around for a long time.
The radar gun was first used to measure pitching velocity but then we realized it could help us evaluate the change of speed in comparison of the change up to the fastball.
Eventually, we started using the radar gun to evaluate arm strength and now we have added exit velocity as a metric from the radar gun.
In softball, metrics can help us in the following ways: