Trent Farris Dilfer is an American football coach and former quarterback who is the head football coach for the UAB Blazers. Dilfer previously played in the National Football League (NFL) for 14 seasons. He achieved his greatest professional success as the starting quarterback of the Baltimore Ravens during their Super Bowl-winning season in 2000.

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.