The aim of this study was to investigate the reliability and validity of the 20-second Wingate test for the upper limbs. The study was conducted on a group of 34 players with an average age of 24.2 ± 3.29 years. The researcher used a single-group experimental design. Warm-up was standardized for both tests across all participants. Each player performed two repetitions of the 20-second Wingate test and two repetitions of the 30-second Wingate test. The researcher then examined the reliability of both tests on an absolute and relative level. Additionally, the researcher studied the ability to predict the 30-second Wingate test performance based on the results obtained from the 20-second Wingate test. The final results indicated that the 20-second Wingate test for the upper limbs is a reliable and valid test, making it a dependable tool for evaluating anaerobic performance of the arms. The results also showed that it is possible to predict both peak and mean muscular power through this test. On the other hand, the study revealed that the fatigue index was not consistent in the 20-second Wingate test for the upper limbs, and this inconsistency was also observed in the 30-second Wingate test.