I am a big believer in using data and metrics to guide player development. As a coach it helps me identify specific skills or movements that are negatively affecting results, it helps me remove any biases I might have based on how I played or how I was taught and focus on what is best for each individual, and it provides me with feedback on whether a player is improving and by how much (crucial information when self-evaluating my performance as a coach).
There has been a lot of buzz in the catching world recently about the Minnesota Twins organization and the one-knee system that Tanner Swanson (Twins Minor League Catching Coordinator) has been implementing. Not sure what I'm talking about? Take a look at the video below of Mitch Garver.
Notice anything strange? Mitch is catching from a one-knee stance with runners on base. In fact, he caught the entire 2019 season from ONLY one-knee stances. Conventional wisdom says catchers need to transition to a secondary stance with runners on base to prevent free bases on wild pitches and pass balls.
I wanted to take a deeper look at the numbers to determine whether staying in a one-knee stance with runners on base is beneficial at the high school level.