George M. "Potsy" Clark (March 20, 1894 – November 8, 1972) was an American football and baseball player, coach, and athletics administrator. He served as the head football coach at Michigan Agricultural College, now Michigan State University, (1920), the University of Kansas (1921–1925), Butler University (1927–1929), and the University of Nebraska–Lincoln (1945, 1948), compiling a career college football record of 40–45–7. Clark was also the head coach of the National Football League's Portsmouth Spartans/Detroit Lions (1931–1936, 1940) and Brooklyn Dodgers (1937–1938), amassing a career NFL mark of 64–42–12. Clark's 1935 Detroit Lions team won the NFL Championship. From 1945 to 1953, Clark served as the athletic director at Nebraska.

As a member of the American Expeditionary Force (AEF) during World War I, Clark was a member of the U.S. Army's 89th Division's football team that won the AEF championship in March 1919. In a team with many college football stars, Charles Gerhardt played quarterback and Clark played left halfback under the direction of right guard, team captain and coach Paul Withington.

Head coaching record College football

NFL Team Year Regular season PostseasonWonLostTiesWin %Finish Won Lost Win % ResultPRT19311130 .786 2nd in NFL - - - -PRT1932622 .750 3rd in NFL 0 1 .000 Lost Playoff Game to Chicago BearsPRT1933650 .545 2nd in NFL Western - - - -DET19341030 .769 2nd in NFL Western - - - -DET1935732 .769 1st in NFL Western 1 0 1.000 Won NFL Championship over New York GiantsDET1936840 .667 3rd in NFL Western - - - -BKK1937371 .300 4th in NFL Eastern - - - -BKK1937443 .500 3rd in NFL Eastern - - - -BKK1939461 .400 3rd in NFL Eastern - - - -BKK Total11175.393---DET1940551 .500 3rd in NFL Western - - - -PRT/DET Total53257.679101.000Total644212.604101.000

See also List of college football head coaches with non-consecutive tenure

References