The present study aims to analyze the performance discrepancies between a specified case study fighter and his opponents across 18 competitive kickboxing matches. The research involved a sample comprising of a singular subject pitted against 18 distinct opponents (n=19) in a series of competitive kickboxing bouts, all male participants possessing a minimum of five years of experience in kickboxing. A total of 40 variables were identified, of which 37 were designated to evaluate technical prowess, while the remaining 3 focused on tactics. The assessment of performance, based on video recordings, was carried out by a panel of three evaluators.
To ascertain the disparities in the efficacy of technical and tactical components between the case study fighter and his opponents, the Chi-square test of total frequencies variance was employed at a statistical significance level of 0.05, utilizing the IBM SPSS 26.0 software. Standardized residuals exceeding +2.0 and falling below -2.0 were instrumental in identifying the key variables contributing to the overall divergence between the case study fighter and his opponents.
The outcomes of the study revealed a significant statistical contrast between the case study fighter and his adversary across 23 variables, encompassing hand-based strikes in 6 instances, leg-based strikes in 9 instances, arm and leg defense in 4 instances, advanced defense techniques in 3 instances, method of victory in 1 instance, and tactics in 1 instance. The research findings shed light on the distinct disparities between the case study fighter under examination and his opponents, highlighting the opponents’ heightened usage of hand and foot strikes as opposed to the case study fighter’s superior proficiency in hand and foot defenses, alongside adept employment of advanced defensive maneuvers.
Keywords: kickboxing: K-1 discipline, performance, Chi-square test, technique, tactics.

