Pitching, hitting, fielding, and baserunning, extending into situational judgment and game management.
Baseball is a team sport centered on the pitcher-batter matchup, combining fielding, baserunning, and tactics. Growth progresses from playing catch and batting tee practice through situational judgment, position-specific expertise, competitive league experience, player development and coaching, to redefining how baseball is played and taught. The seven levels are designed around the USA Baseball LTAD player development pathway and the MLB Farm System's competitive tier structure.
A 7-stage framework for baseball player development that defines age-specific skill development goals and pathways, serving as a direct basis for Levelica 7-level boundary design.
An academic study analyzing 17 developmental trajectories of MLB players, providing development indicators and game-count data for each pathway (high school, college, minor league, major league), serving as the basis for checklist numerical benchmarks.
The 5-tier minor league system (Rookie-A-AA-AAA-MLB) that provides official standards for player development and competition levels, serving as an authoritative reference for L4-L7 competition level mapping.
A frequency-based skill prioritization framework that defines the importance hierarchy of baseball skills and practice time allocation criteria, serving as the basis for selecting checklist items at each level.
Empirical research demonstrating that deliberate practice, distinguished from mere repetition, drives baseball skill acquisition through feedback-based systematic training, providing evidence for qualitative transitions across levels.
