Supervision is a hierarchical and evaluative relationship extending over time between a supervisor and a supervisee that permits quality control of service delivery of neophyte practitioners (Bernard & Goodyear, 2009; Watson, Zizzi, Etzel, & Lubker, 2004). It is a cardinal part of the training and a requirement to become a certified consultant of the Association for Applied Sport Psychology (Certified Mental Performance Consultant [CMPC]). This study aimed to: identify the structure of supervision and effective supervision practices used in enhancing the competence of sport psychology trainees, recognize the challenges and mistakes of providing effective supervision, explore the necessary competencies of sport psychology supervisors, and discuss the preparedness of graduates who are CMPC eligible to provide supervision. Semi-structured interviews were conducted with 10 supervisors and directors of supervision (4 female) representing nine doctoral programs in the U.S. Supervisors had 6-35 years of experience providing sport psychology services (Med = 20.3) and 2-26 years of experience providing supervision (Med = 17.3). The programs were diverse in terms of department affiliation (psychology = 4; sport science = 4, other = 1) and institutional affiliation (R1 = 4, R2 = 1, R3 = 1, other = 2). Interviews were transcribed verbatim and data were analyzed both deductively as guided by research questions, and inductively as themes emerged. A total of 927 meaning units (MU) emerged under the six issues: structure of supervision, supervision practices, challenges to providing supervision, mistakes made regarding supervision, competencies of a supervisor, and preparedness to provide supervision. The structure of supervision in the different programs is unique, dynamic, and represents the resources and constraints within which supervisors operate. Despite substantial variability in supervision across the different programs and the varying resources available, supervisors tended to discuss similar supervision practices utilized in the programs. Time constraints represent the primary challenge to providing effective supervision. The inability to establish a trusting relationship with the supervisee is the most repeated mistake. Competencies necessary to provide supervision exceeded those needed for service provision, and are usually attained only after working as a professional in the field for a few years. Necessary competencies of supervisors are further discussed in the framework of structuring and providing effective sport psychology supervision. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]