Leader-member exchange theory (LMX) has proliferated as a framework for understanding coach-athlete interactions, as the exchanges of communicative resources greatly influence athletes’ sporting experiences. The current study uses coaches’ perceptions of task and social determinants of LMX to reveal comparative insights about forming low- and high-quality exchanges. Data collected from 380 coaches, spanning 14 different sports, at 160 high schools indicated that high-quality exchanges are solely determined by athletes’ abilities. In contrast, low-quality exchanges are determined by coaches’ negative affect towards athletes, and to a lesser extent, athletes’ poor performances and lack of competitiveness. Findings contribute to sports communication literature by examining LMX from coaches’ perspectives and identifying the unique determinants of various groupings within LMX. Both coaches and athletes may find utility in the current findings as they look to create meaningful relationships and positive sporting experiences.