Self-efficacy beliefs related to the performance of a task have been identified as strong predictors of performance success. Research has hypothesized that the most influential contextual factor in athlete self-efficacy development is the athlete-coach relationship, yet there is little research on this relationship. The purpose of this study was to examine collegiate athletes’ perceptions of the prevalence of transformative and destructive coaches, the teaching methods athletes perceive to be transformative (strengthening self-efficacy belief), and the influence of coaching methods on sport self-efficacy belief. Just over two-thirds of the athletes expressed having transformative coaches while over one-third experienced coaches they defined as destructive, with many of these coaches utilizing overtly abusive tactics. This positive and negative exposure was significantly related to athlete self-efficacy belief. Transformative coaching methods were highlighted which add to the body of sport management research by highlighting how coaches influence performance beliefs of their athletes.