Memorializes Kate F. Hays (1943-2021), a pioneer in the field of Sport, Exercise, and Performance Psychology (SEPP). Kate was a practitioner in the field of SEPP since 1971 and maintained an independent practice, The Performing Edge, in Toronto, Canada. As a psychologist with 50 years of innovative and influential contributions to SEPP, Kate was not only a master practitioner, but also an educator and scholar in the field. (PsycInfo Database Record (c) 2022 APA, all rights reserved).