Defensive Real Passing Yards per Attempt

Through Week 1 of the 2011 Regular Season

About Defensive Real Passing Yards Per Attempt. The Cold, Hard Football Facts constantly use passing yards per attempt as a way to measure the effectiveness of each quarterback at getting the ball downfield. Longtime CHFF readers know that a quarterback’s average per attempt has an incredibly high correlation to success. The same goes for defense.
Real Passing Yards Per Attempt is a little more advanced and a team-wide indicator. It doesn’t just reward a quarterback for throwing the football. Instead, as a team indicator, it also includes the impact of sacks. Defensive Real Passing Yards Per Attempt is merely its defensive counterpart. We use only NET passing figures to determine yards per attempt. This is gross passing yards, minus yards lost via sacks. But we also divide it by total dropbacks – that is, not just pass attempts, but sacks as well. This formula the TRUE average per pass attempt, its Real Passing Yards Per Attempt.
Bottom line: it rewards defenses for generating sacks. There are few if any efficiency indicators outside of CHFF Insider that do so.

Week 1 Defensive Passing YPA Overview
San Diego tops Defensive Passing YPA after embarrassing Donovan McNabb and the Vikings in Week 1. Minnesota produced a dismal average of just 1.65 yards per pass attempt each time McNabb dropped back in the pocket.

To put that into perspective, EVERY team averaged more than 1.65 YPA on the ground in Week 1, let alone through the air (Dallas was the worst, at 2.46 YPA on the ground, still well ahead of Minnesota's average through the air).

San Diego's pass-defense dominance also sets up the first great statistical clash of the 2011 season: the Chargers visit New England on Sunday. The Patriots were the most effective passing team in Week 1, with an impressive 10.53 Passing YPA in their win over Miami.

Expect both teams to meet somewhere in the middle.
RankTeamAttPYdsSacksYds LostDRPYPA
22   New England494164267.36
32   Miami485171110.53
17   Minnesota48335256.60
20   Jacksonville342632146.92
23   Kansas City26208177.44
9   Houston311973255.06
28   Indianapolis24220138.68
12   Detroit46266275.40
24   Green Bay494193237.62
19   N.Y. Giants343054476.79
26   New Orleans353122168.00
27   N.Y. Jets363424168.15
11   Oakland463045325.33
5   Philadelphia352095284.53
21   Pittsburgh29224197.17
1   San Diego15392111.65
3   San Francisco371975423.69
15   Seattle20124006.20
6   Los Angeles321873204.77
13   Baltimore412804345.47
25   Atlanta323125237.81
4   Denver22105164.30
30   Arizona374224199.83
29   Tampa Bay33305009.24
7   Cincinnati402132114.81
10   Chicago473195445.29
18   Washington322684286.67
31   Carolina2730921410.17
14   Tennessee241752156.15
2   Buffalo361192142.76
16   Dallas443354206.56
8   Cleveland271734185.00

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