The aim of this study is to investigate the psychological states (i.e., cognitive appraisals, coping strategies, emotions) related to performance in a judo match. Five young male judokas, registered as high-level participants in the youth category and training at the Pôle Espoir Judo d’Ile de France, took part in the study (Mage = 14.6 ± 1.14 years). A video protocol using the Dartfish© software tagging panel was set up to take a quantitative measure of athletes’ psychological states during a judo match. Results show that psychological states (i.e., cognitive appraisals, coping strategies, emotions) vary according to an athlete’s performance during a match (i.e., points or advantages lost, points or advantages gained, tied). However, additional research is needed for better understanding of the complex links between psychological processes and performance.