sentences:  Following his military service, he was an assistant coach for a season at the University of Arkansas in 1956 under former Sooner Jack Mitchell, and then joined the staff of first-year head coach Jim Owens at the University of Washington in Seattle in 1957.Owens and Clark were teammates at Oklahoma in their undefeated 1949 season.After seven seasons in Seattle with Owens at Washington, he was hired as head coach at Washington State in Pullman in January 1964; his initial contract was a three-year deal for $16,500 per year.