William Marshall "Big Bill" Hollenback was an American football player and coach. He played football at the University of Pennsylvania, where he was selected as an All-American fullback three straight years, from 1906 to 1908. Hollenback served as the head football coach at Pennsylvania State University, the University of Missouri (1910), Pennsylvania Military College, now Widener University, and Syracuse University (1916), compiling a career college football record of 46–19–8. He was inducted into the College Football Hall of Fame as a player in 1951.

The 1925 National Football League (NFL) Championship, claimed by the Chicago Cardinals, has long been the subject of controversy, centering on the suspension of the Pottsville Maroons by NFL commissioner Joseph Carr, which prevented them from taking the title. The Maroons were one of the dominant teams of the 1925 season, and after defeating the Chicago Cardinals 21–7 on December 6, they came away with the best record in the league. However, Carr suspended and removed the team from the NFL after they played an unauthorized exhibition game in Philadelphia, on the grounds that they had violated the territorial rights of the Frankford Yellow Jackets. Chicago played and won two more games against weak NFL opponents, but were sanctioned because Cardinals player Art Folz hired four Chicago high school football players to play for the Milwaukee Badgers under assumed names to ensure a Cardinals victory.