There are currently four NFL quarterbacks with a passer rating of over 100.0 — Tom Brady, Philip Rivers, Aaron Rodgers and Michael Vick. Passer rating is calculated using pass attempts, completions, passing yards, touchdowns and interceptions. Since the inception of the NFL, a quarterback has finished a season with rating of at least 100 just 51 times, a feat accomplished by only 35 different quarterbacks including the four listed above from this season.
In the NFL’s first 80 seasons, the mark was reached 26 times. Hall of Fame signal callers Otto Graham and Sid Luckman each had a passer rating of 100.0 or better once in the 1940s. No quarterback hit the mark in the ’50s. In the ’60s, four quarterbacks did it, including Bart Starr and Len Dawson — both during the 1966 season. Roger Staubach and Ken Stabler were two of the three to do it in the ’70s. The 100 mark was reached four times in the ’80s — once by Dan Marino and three times by some guy named Joe Montana. The heir to Montana’s throne in San Francisco, Steve Young, accounted for half of the ’90s total with six, the record for most such seasons by one quarterback.
Then came the new millennium. From 2000-2009, 17 different quarterbacks finished a season with a passer rating of 100.0 or greater 21 times. Five did it last year, including Brett Favre for the first and only time in his career. That’s 25 times since Y2K including this season, or one less than the total from the previous 80 years of professional football combined.