Otto Everett Graham Jr. was an American professional football quarterback who played for the Cleveland Browns in the All-America Football Conference (AAFC) and National Football League (NFL) for 10 seasons. Graham is regarded by critics as one of the most dominant players of his era and one of the greatest quarterbacks of all time, having taken the Browns to league championship games every year between 1946 and 1955, making ten championship appearances, and winning seven of them. With Graham at quarterback, the Browns posted a record of 105 wins, 17 losses, and 4 ties, including a 9–3 win–loss record in the AAFC and NFL playoffs. He holds the NFL record for career average yards gained per pass attempt, with 8.63. He also holds the record for the highest career winning percentage for an NFL starting quarterback, at 81.0%. Long-time New York Yankees owner George Steinbrenner, a friend of Graham's, once called him "as great of a quarterback as there ever was."

The quarterback, colloquially known as the "signal caller", is a position in gridiron football. Quarterbacks are members of the offensive platoon and mostly line up directly behind the offensive line. In modern American football, the quarterback is usually considered the leader of the offense, and is often responsible for calling the play in the huddle. The quarterback also touches the ball on almost every offensive play, and is almost always the offensive player that throws forward passes. When the QB is tackled behind the line of scrimmage, it is called a sack.