Kinnick played basketball, too, and he was Iowa's second leading scorer and the 15th leading scorer in the Big Ten his sophomore year in 1937–38. After a brief stint in baseball that summer, Nile dropped the third sport. In 1938, he hurt his ankle in preseason football practice and was not at full strength for his entire junior year. Kinnick played through the pain, but it hampered his effectiveness. His Christian Science beliefs limited the amount of medical assistance that Kinnick allowed himself to receive from the team doctors, believing that his injury could be overcome by his reliance on prayer for healing.