The three notable quarterback platoons in NFL history:
1. Los Angeles Rams, 1949-52: Bob Waterfield was a Hall of Fame-caliber quarterback, but the Rams drafted Norm Van Brocklin in 1949, and suddenly, the Rams were QB-rich. Over the next three years, the Rams used both quarterbacks; Waterfield more than Van Brocklin, but Van Brocklin started his fair share of games and relieved Waterfield a bunch. The 1950 Rams set an NFL scoring record of 38.8 points a game, which still stands. The Rams lost the 1949 NFL title game with both quarterbacks playing, lost the 1950 NFL title game with Waterfield going virtually the entire way, then won the 1951 NFL title game when Waterfield played most of the game but Van Brocklin came in and threw a tiebreaking touchdown pass in the fourth quarter. Finally, after each started six games in 1952, Waterfield retired.