During the early 1960s, the Los Angeles Rams had a terrible reputation. This began to change when Roman Gabriel became their quarterback. By the late 60s, Gabriel had become one of the top quarterbacks in the NFL. He won the NFL's Most Valuable Player award in 1969 and helped the Rams become a respectable team that was considered a legitimate championship threat. Gabriel's strong arm made him a formidable player, but he often played it safe to avoid turnovers. During the 1960s and early 1970s, Gabriel's touchdown-interception ratio of 201-149 was considered very good.

In 1972, Gabriel was traded to the Philadelphia Eagles, where he won his first Passing Yards Title with 3,219 yards and his second TD Title with 23 touchdowns. Statistically, this was the best year of his career, but he regressed afterward. He retired after the 1977 season with 29,444 passing yards.

Gabriel and other offensive stars from his time have struggled to make it into the Football Hall of Fame, possibly because their records were surpassed by the huge offensive statistics of the 90s and 00s.