Question: Herbert Orin "Fritz" Crisler, was an American college football coach who is best known as "the father of two-platoon football," an innovation in which separate units of players were used for offense and defense, before coaching, he played football at the University of Chicago under who, who nicknamed him Fritz after violinist Fritz Kreisler?
Sentence (from "Earl Martineau"): He was the backfield coach for Crisler at Princeton University from 1932 to 1937 and an assistant coach under Crisler at the University of Michigan from 1938 to 1945.
Relevant evidence: No