Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Donald Rex Clark (December 22, 1923 - August 6, 1989) was an American football player and coach who was perhaps best known as the head coach of the USC Trojans football team from 1957-1959. He compiled a 13-16-1 record while coaching at USC, going 0-5-1 against rivals UCLA and Notre Dame. The highlight of his career was in 1959, when USC shared the inaugural AAWU title in a three-way tie. However, he remains the only coach to post a losing record at USC over more than one season. Clark was born in Shurdan, Iowa, and his family moved to Los Angeles when he was 15. He attended USC, where he played as a guard on the football team under coach Jeff Cravath in 1942 before entering the military during World War II.