Speaking of reserves, remember George Blanda. Those were the days
In the AFC title game against the Baltimore Colts, Blanda again relieved an injured Lamonica, completing 17 of 32 passes for 217 yards and two touchdowns while also kicking a 48-yard field goal and two extra points, keeping the Raiders in the game until the final quarter, when he was intercepted twice. Aged 43, he became the oldest quarterback ever to play in a championship game, and was one of the few remaining straight-ahead kickers in the NFL.