This study aims to find out the link between claimed self-handicap and the sports performances of disabled athletes in Cameroon in order to better understand the behavior of athletes with disabilities, during training sessions and even in competition. To do this, three (03) data collection tools were used including observation, interview, and questionnaire.Through an observation grid designed on the basis of the model for developing a training session preparation sheet on the one hand, and the criteria for evaluating sports performances defined by Magill (1988) on the other hand, we were able to observe the 46 athletes who agreed by informed consent to participate in our study. The same athletes were subjected to a questionnaire consisting of 15 items grouped around the indicators and indices of different variables in our study. Similarly, 10 supervisors each had a 40-minute semi-structured interview to provide us with more information about participants. This interview also allowed us to understand the attitudes of the coaches, to gather up-to-date information on the quality of supervision that athletes with disabilities receive, and to understand the pedagogical triangle and the atmosphere that reigns in the group before, during, and after a sports competition.After analysis and interpretation of the results, it appears that: the null hypothesis (Ho) is rejected and the alternative hypothesis (Ha) is accepted, which means that the claimed selfhandicap influences sports performances of disabled athletes. In other words, the more strongly disabled athletes develop claimed self-handicap, the less their sports performances decrease. So claimed self-handicap is a predictor of sports performances of athletes with disabilities.