The third wave of sports analytics after (1) recruitment market inefficiencies and (2) playing-style optimization. Uses biomechanical feedback loops (analogous to golf launch monitors or baseball spin tracking) to improve player technique — particularly shot power/accuracy and passing. The xG model can't account for striker skill in striking the ball true; the next frontier is measuring and improving the biomechanics that produce outcomes above model expectations.
Identify the specific biomechanical factors that explain above-model performance (shot power, ball-striking angle, body positioning). Build feedback loops where players can see their mechanics and adjust. The constraint is change management, not model quality — getting players and coaches to adopt biomechanical feedback.