Carl Diem founded world first sport psychology laboratory at Dentsche Sporthochschule in Berlin, Germany. Therefore he is supposed to be the father of Sport Psychology.

Sport psychology is an interdisciplinary science that draws on knowledge from many related fields including biomechanics, physiology, kinesiology and psychology.

Speak to a sport psychologist.

there are very many subfields in psychology. some examples are experimental psychology, developmental psychology, consumer psychology, media psychology, educational psychology, exercise and sport psychology, behavioral psychology, social psychology, foreinsic psychology, clinical psychology, and geriatric psychology.

The rules and regulations of every sport, so you know the ins and out.