included Heisman Trophy winner Tom Harmon, Bob Chappuis, Forest Evashevski (who later became athletic director at Iowa), Bump Elliott, Pete Elliott, Albert Wistert, Bob Westfall, Ed Frutig, and Julius Franks. While coaching at Michigan, Crisler developed the platoon system in which separate groups play offense and defense. He unveiled the system in 1945 in a game played at Yankee Stadium against Army. Before Crisler switched to the platoon system, players handled both offensive and defensive duties with only occasional substitutions. Using a single wing formation, Crisler also conceived the buck lateral series and the spinning fullback play. Crisler's greatest success as head football coach at Michigan came with the 1947 Michigan Wolverines football team. The 1947 team, known as the "Mad Magicians" due to Crisler's complex shifts, stunts, and schemes, went undefeated and untied with a 10–0 record. Though ranked #2 in the Associated Press poll at the end of the regular season, the Wolverines defeated the USC Trojans by a score of 49–0 in the 1948 Rose Bowl game, and were selected as the nation's #1 team by a 226–119 margin over Notre Dame in an unprecedented post-bowl Associated Press poll. The 1947 team has been selected as the best team in the history of Michigan football. Led by team captain, Bruce Hilkene, quarterback Howard Yerges, and All-American halfbacks Bob Chappuis and Bump Elliott, the 1947 Wolverines outscored their opponents, 394–53. The Wolverines victory in the 1948 Rose Bowl tied Michigan's final in the first ever 1902 Rose Bowl, as the most points scored, and the largest margin of victory, in the history of the "Granddaddy of Them All". The 1947 Michigan team was also the first fully to embrace the concept of defensive and offensive specialization. Crisler established fully separate offensive and defensive squads. Only Bump Elliott and Jack Weisenberger played on both squads. In November 1947, Time magazine ran a feature article about the 1947 Wolverines (with Bob Chappuis’ photograph on the cover) called, "The Specialist." The Time article focused on the new era of specialization marked by Crisler's decision to field separate offensive and defensive units. The article noted: "Michigan's sleight-of-hand repertory is a baffling assortment of double reverses, buck-reverse laterals, crisscrosses, quick-hits and spins from seven different formations. Sometimes, watching from the side lines, even Coach Crisler isn't sure which Michigan man has the ball. Michigan plays one team on offense, one on defense .