Slack Regulation: The Hidden Key to Power, Precision, and Arm Health in Pitching Randy Sullivan2025-07-24T22:34:58-04:00 Most people watching a pitcher unleash a 95 mph fastball [...] Slack Regulation: The Hidden Key to Power, Precision, and Arm Health in PitchingRandy Sullivan2025-07-24T22:34:58-04:00