Field-Based Physical and Temporal Correlates of Pitch Velocity in Adolescent Baseball Pitchers

Inclusion Criteria: * Male adolescent baseball players aged 13 to 14 years. * Regular pitchers or players who performed regular pitching duties within an organized baseball training process. * Regular participation in baseball training during the assessment period. * Ability to complete field-based jumping, sprinting, shoulder flexibility, pitching, and video-based wind-up assessments. * Parent or legal guardian consent and participant assent. Exclusion Criteria: * Active musculoskeletal injury, relevant pain, or medical restriction limiting participation in jumping, sprinting, or pitching assessments. * Ongoing physical rehabilitation at the time of assessment. * Medical contraindication for performing physical efforts consistent with regular baseball practice. * Insufficient attendance to complete the minimum repeated-measures record required for analysis. * Withdrawal of parent/legal guardian consent or participant assent.