Paper Lion: Confessions of a Last-String Quarterback

Blurb

Paper Lion, published in 1966, is a non-fiction book by American author George Plimpton.
In 1960, Plimpton, not an athlete, arranged to pitch to a lineup of professional baseball players in an All-Star exhibition, presumably to answer the question, "How would the average man off of the street fare in an attempt to compete with the stars of professional sports?" He chronicled this experience in his book, Out of My League.
To write Paper Lion, Plimpton repeated the experiment in the National Football League, joining the training camp of the 1963 Detroit Lions on the premise of trying out to be the team's third-string quarterback. Plimpton, then 36 years old, showed how unlikely it would be for an "average" person to succeed as a professional football player. The book is an expanded version of Plimpton's two-part series which appeared in back-to-back issues of Sports Illustrated in September 1964. The book's epilogue is also an expanded article from Sports Illustrated which appeared one year later.
Plimpton had contacted several teams about his idea including his hometown New York Giants and New York Titans and Baltimore Colts.