This term refers to the lateral rotation of the radius, a simple forearm twist at the radioulnar joint. In pitching, this action generally turns the palm toward the body and upward at release.
Some supination prior to release is required to throw different types of pitches, but supination during release leaves the arm subject to forearm flyout, which can result in a collision between the ulna and the humerus as the elbow slams closed.
- Pitch Movement, Part III: The River of Seams
- April 2, 2020
- Pitch Movement, Part II: Sweet Seams (Are Made of This)
- March 15, 2020
- Pitch Movement, Part I: You Spin Me Round (Like a Baseball)
- February 28, 2020
- Scouting Grades: Speed
- February 20, 2020
- Still Learning 11 Years Later
- February 5, 2020
- Is it really supported by science?
- February 8, 2017
- To athletes seeking "exposure"
- February 1, 2017
- Discovering the Intent to Throw Hard
- January 25, 2017
- Season Preparation: On-ramping
- December 15, 2016
- My Approach to Training Pitchers
- May 29, 2015
- [posts archive]