Objective: To determine the correlation between the kilocalories provided by macro-nutrients and the body composition of baseball players from the Camagüey team participating in the National Series 63. Methodology: A field study was conducted using a quantitative, descriptive, and longitudinal approach. Analytical-synthetic, inductive-deductive, and measurement methods were employed, following protocols established by the National Institute of Sports Medicine. Results: No significant differences were found in the caloric contribution of macronutrients across different player positions. A strong correlation between body composition and macronutrients was observed only in catchers, specifically regarding fats and carbohydrates. Discussion: Out-fielders maintained stable body composition, indicating metabolic balance between energy intake and expenditure, which supported an appropriate health status for their athletic activities. Their body fat percentages aligned with recommendations from the Division of Sports Science and Technology of the United States Olympic Committee. Conclusions: Nutritional strategies did not account for positional differences in game-play. The correlation between macronutrient intake and body composition varied across different assessment periods, indicating a lack of consistency in dietary management.
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