Sports coaches play a key role in shaping successful athletes and ensuring long-term good results for their club or country. Different types of perfectionism in coaches, as well as their emotion regulation, especially anger and verbal aggression, play a big role in the successful performance of the coaching job. The aim of this research was to examine the differences in emotional regulation, anger and verbal aggression with regard to the type of perfectionism according to the 2x2 model (pure high personal standards - pure PSP, pure evaluative concerns - pure ECP, mixed perfectionism - high personal standards and high evaluative concerns and nonperfectionism - low personal standards and low evaluative concerns) in sports coaches and examine the mediating role of difficulties in emotional regulation and mental health in the relationship between perfectionism and the aggression. 180 sports coaches (88 female and 92 male) from 27 sports in the age from 18 to 64 took part in the research. Most respondents have completed some form of coaching education and include coaches coaching at all competitive levels. The research was conducted using an online questionnaire. The results confirmed the 2x2 model of perfectionism and showed that coaches with pure PSP and nonperfectionism use cognitive reappraisal significantly more than coaches with mixed perfectionism, futhurmore that coaches with pure PSP, pure ECP and mixed perfectionism express anger significantly more than coaches with nonperfectionism and that coaches with mixed perfectionism are significantly more verbally aggressive than coaches with nonperfectionism and pure ECP. Differences in the use of expressive suppression were not significan. A partial mediation effect of difficulties in emotional regulation in the relationship between perfectionism and the aggression was obtained. The conducted research indicates the importance of differences in types of perfectionism for emotional regulation and expression of anger and verbal aggression in sports coaches, which has important implications for the training process as well as the athletes they work with. Guidelines for further research in this area are suggested.