Walsh was an outstanding athlete at Hollywood High School in Los Angeles, and earned varsity letters in basketball, track, and football at the University of Notre Dame. Walsh was an All-American center and captain of the 1924 Notre Dame football team under head coach Knute Rockne. Walsh anchored the team's offensive line, dubbed the "Seven Mules," who blocked for the famed "Four Horsemen" backfield. The 1924 team completed an undefeated season with a win over Stanford in the Rose Bowl. Walsh played every minute of the game against Army in 1924 with two broken hands, never missed a single snap of the ball, was involved in 75 percent of the tackles on defense, and intercepted a pass in the final minutes of the game to preserve a Notre Dame victory. He remains the offensive center on the All-