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This study aimed to identify the technical-tactical variation through the index of performance and types of techniques in high-level judo in the 2020 Olympic Games. The data were extracted from the Official Results Books considering the competition performance of 393 competitors.  Nage-waza katame-waza  and scoring index, and the classification of techniques groups according to the sex, weight category and competition outcome were analysed. A t-test was used to compare the variables according to the sex and analysis of variance to compare weight categories and competition outcome groups. Finally, the Chi-square tests were used to test the association between frequency of groups of techniques and places in the competition, weight category and competition outcome. The level of significance is 5%. The main results demonstrated higher  nage-waza  and  katame-waza  variation (absolute values) for medallist compared to the other groups (p &lt; 0.001), and higher values for repechage group compared to the non-medallist (p &lt; 0.001). The  katame-waza  variation index was higher in female (p = 0.019) and medallists have a higher scoring and  nage-waza  variation index compared to the repechage group and non-medallist (p &lt; 0.001). We concluded that medallist athletes have high technical variability compared to the other groups and female athletes have a high  katame-waza  variation compared to the male.

Match-related performance during the Olympic Games 2020: a technical variability analysis of high-level judo athletes