About Amos Alonzo Stagg: American football player and coach (1862 - 1965) | Biography,...

"On September 16, 1960, Amos Alonzo Stagg retired as a football coach at the age of 98. From the article:

"Stagg became the first paid football coach at Williston Seminary, a secondary school, in 1890. This was also Stagg's first time receiving pay to coach football. He would coach there one day a week while also coaching full-time at Springfield College. Stagg then coached at the University of Chicago from 1892 to 1932. University president Robert Maynard Hutchins forced out the septuagenarian Stagg, who he felt was too old to continue coaching.

At age 70, Stagg moved on to the College of the Pacific in Stockton, California, where he coached from 1933 to 1946. In 1946 Stagg was asked to resign as football coach at Pacific. During his career, he developed numerous basic tactics for the game (including the man in motion and the lateral pass), as well as some equipment. Stagg played himself in the movie Knute Rockne, All American released in 1940. From 1947 to 1952 he served as co-coach with his son, Amos Jr., at Susquehanna University in Pennsylvania. In 1924, he served as a coach with the U.S. Olympic Track and Field team in Paris. Stagg's final job was as kicking coach at the local junior college in Stockton, California, which was then known as Stockton College. "The Grand Old Man of Football" retired from Stockton College at the age of 96 and later died in Stockton, California, at 102 years old."