The successful organization of a sports event requires an effective management strategy to create a professional, fair, and competitive environment while enhancing athlete participation. This study aims to analyze the implementation of the Planning, Organizing, Actuating, and Controlling (POAC) management functions in the organization of the 2026 East Java Open by the East Java Provincial Association of the All Indonesia Athletics Association (PASI) to improve competition quality. This study employed a qualitative approach, with data collected through observations, interviews, documentation, and questionnaires. Data were analyzed using the Miles and Huberman interactive model, which consists of data reduction, data display, and conclusion drawing, supported by descriptive analysis using the Guttman Scale. The findings indicate that the implementation of the POAC management functions was generally effective. The Planning function achieved a score of 14 out of 18 (77.8%, Fairly Strong), Organizing scored 10 out of 12 (83.3%, Strong), Actuating scored 15 out of 18 (83.3%, Strong), while Controlling obtained the highest score of 26 out of 27 (96.3%, Excellent). These findings suggest that effective supervision, supported by well-organized planning, implementation, and organizational management, contributes significantly to improving the quality of sports event management. This study concludes that the implementation of the POAC-based management strategy has effectively supported the improvement of the quality of the 2026 East Java Open organized by PASI East Java, with Controlling emerging as the most dominant management function. The findings are expected to serve as an evaluation tool and practical reference for PASI East Java and other sports event organizers in developing more professional, effective, and sustainable sports competitions.