The Ken Anderson Index
Measuring Quarterback Greatness Across NFL Eras
How does Ken Anderson's career compare with quarterbacks already enshrined in Canton when performance is evaluated within the NFL environment in which each quarterback actually played? The Anderson Index is an independent statistical examination of quarterback greatness across eras.
Research principleJudge the performance against the era in which it was produced.
Five Questions
Select a question to see what the sourced record shows
League-best, four separate times.
Anderson led the NFL in passer rating in 1974, 1975, 1981 and 1982. In each of those seasons his era-adjusted Rate+ sat well above that season's league average of 100.
Rate+ in his four passer-rating title seasons
Rate+ is Pro Football Reference's index that adjusts passer rating to each season's league environment. 100 equals league average. A 127 should not be read as "27 percent better."
1981 was a recognized MVP season.
Anderson completed 62.6% of his passes for 3,754 yards, 29 touchdowns and 10 interceptions, led the NFL with a 98.4 passer rating and led Cincinnati to a 12-4 record and an AFC championship. Hall of Famer Dan Fouts, an elite contemporary, produced more volume that year. Anderson posted the higher efficiency marks and received the major AP honors.
| Measure | Ken Anderson | Dan Fouts |
|---|---|---|
| Completion % | 62.6% | 59.1% |
| Passing yards | 3,754 | 4,802 |
| TD / INT | 29 / 10 | 33 / 17 |
| Passer rating | 98.4 | 90.6 |
| Adj. net yards / attempt | 7.43 | 7.27 |
Rare company, across two distinct peaks.
The six-year gap between his 1974–75 and 1981–82 titles shows two separate periods at the top of the league. The Bengals' archival account describes Anderson as the only quarterback with four NFL passing titles not enshrined in Canton.
Seasons leading a major pro league in passer rating
Selected quarterbacks with four or more titles. Source: NFL Record & Fact Book / Pro Football Reference.
6.7 points clear of the next qualified passer.
Anderson completed 218 of 309 passes in 1982. He also led the NFL in completion percentage in 1974 (64.9%) and 1983 (66.7%), giving him three accuracy titles across a decade.
1982 completion percentage, qualified passers
The 1982 regular season was shortened to nine games by a players' strike, so this is a within-season comparison rather than a full 16-game sample.
Inside the Hall range, below its center.
Anderson's Pro Football Reference Hall of Fame Monitor score is 82.99. That is below the model's reported average for Hall quarterbacks and above several quarterbacks already enshrined. The Monitor measures broad résumé strength and is not an era-adjusted score or an official Hall threshold.
PFR Hall of Fame Monitor, model-covered Hall quarterbacks
Population: Hall quarterbacks within the Monitor's scope (debut 1955 or later, 50+ games). Anderson, who is not enshrined, is shown for reference; the dashed line marks his 82.99. September 2026 research snapshot.
How the Index Works
A public-source research framework, reported in four separate dimensions instead of one custom score
Era-relative efficiency
Performance and league rank measured against the season that produced it.
Peak performance
The best seasons, judged by conventional statistics and independent honors.
Career accumulation
Totals and recognition across 16 seasons, read in the context of era.
Postseason + team
A 2-4 playoff record and one Super Bowl appearance, kept visible as a counterweight.
What the data show
- Four NFL passer-rating titles across two periods of his career.
- AP MVP, AP Offensive Player of the Year and First-Team All-Pro in 1981.
- Three completion-percentage titles, including 70.6% in 1982.
- A Hall of Fame Monitor score inside the enshrined range, below its average.
Limits of the analysis
- The Hall publishes no statistical threshold for election.
- No single measure stands alone as a test of Hall qualification.
- Era adjustment cannot fully account for coaching, teammates, injuries or postseason opportunity.
- The weight given to peak, longevity and championships belongs to the selectors.
Anderson's supportable place in the history is as an early, high-level practitioner whose accuracy, movement and decision-making helped demonstrate the effectiveness of those concepts.
Read the full research.
Download the ReportSources: Pro Football Reference, Ken Anderson; PFR passer rating leaders; PFR completion % leaders; PFR QB Hall of Fame Monitor; Pro Football Hall of Fame selection process; NFL Man of the Year winners; Cincinnati Bengals. Figures as of the September 2026 research snapshot.