Defensive Real Quarterback Rating

Final Statistics for the 2010 Season

Defensive Real Quarterback Rating is the counterpart to our experimental new offensive stat, Real Quarterback Rating. 
Defensive Real Quarterback Rating measures the overall effectiveness of a defense against all aspects of opposing quarterbacks’ performances. The existing passer rating is just that, a measure only of a team’s passing effectiveness. Same for our favorite, Defensive Passer Rating. It measures only how a defense performs against a quarterback’s passing attempts.
Real Quarterback Rating and Defensive Real Quarterback Rating use the same formula as passer rating to yield a similar range of numbers, but includes the impact of rushing attempts, fumbles and sacks – key plays that are not included in the existing passer rating indicator.
Existing passer rating is based upon four factors, average per attempt, completion percentage, touchdown percentage and interception percentage. It requires five game numbers to calculate: attempts, completions, yards, passing TDs and INTs.
Defensive Real Quarterback Rating is based upon the same formula, but includes total attempts by opposing quarterbacks (pass attempts, rushes, sacks); total advances (completions, rushes), net yards (pass yards + rush yards – sack yards); TDs (rushing, passing) and total turnovers (INT, fumbles).
It’s an experimental indicator right now, one that may be tweaked and altered as we watch it generate results. But we do know it has a high Correlation to Victory and high Predictive Rate of victory, just like passer rating and Defensive Passer Rating. But it allows us gauge the overall impact of a defense against quarterbacks, rewarding those, for example, that generate a large number of sacks and forced fumbles, or that contain great running quarterbacks.  
9  ↑ 2New England10567985864273881.72
16  ↓ 3Miami9887354949271986.04
15  ↑ 2Minnesota9777515002272685.60
32  ↓ 1Jacksonville9487455949371897.91
8  ↓ 2Kansas City10287275283252381.21
31  ↑ 1Houston10107876031381896.66
25  ↓ 3Indianapolis10108015465252188.80
20  ↑ 1Detroit10057725498322987.48
2  ↑ 1Green Bay9696924946193275.64
4  ↓ 2N.Y. Giants9746964972293976.14
11  ↓ 1New Orleans9487274900182582.87
3  ↑ 2N.Y. Jets9796774664273075.99
18  ↑ 5Oakland9917235163352486.27
12   ∼ Philadelphia9997335228383483.53
1   ∼ Pittsburgh9746974430183472.28
7  ↑ 2San Diego9396894334252381.13
23  ↑ 1San Francisco10338055244292288.30
26  ↑ 2Seattle10747915897382289.60
10  ↓ 2Los Angeles10187325388262681.93
6  ↑ 1Baltimore10077335094242780.59
13  ↑ 2Atlanta9577305319263184.37
30   ∼ Denver10568286253391896.55
22  ↓ 3Arizona10928505977323087.79
17  ↑ 3Tampa Bay9917515323312886.27
24  ↑ 2Cincinnati9577425312292688.58
5  ↓ 1Chicago10027505029223578.14
27  ↓ 2Washington10518116228302789.89
14   ∼ Carolina10608295374272984.88
19  ↓ 1Tennessee11398845883262586.65
29  ↓ 2Buffalo10718655786342291.20
28  ↑ 1Dallas9777495628403090.82
21  ↓ 5Cleveland10418145601302887.48

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