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 "Fritz Kreisler"): One of the most noted violin masters of his day, and regarded as one of the greatest violin masters of all time, he was known for his sweet tone and expressive phrasing.
Relevant evidence: No