Writers of Pro Football Prospectus 2008

2014 OFFENSIVE LINES

Regular season totals, through Week 2

Revised as of 9/16/2014

Teams are ranked according to Adjusted Line Yards. Based on regression analysis, the Adjusted Line Yards formula takes all running back carries and assigns responsibility to the offensive line based on the following percentages:

  • Losses: 120% value
  • 0-4 Yards: 100% value
  • 5-10 Yards: 50% value
  • 11+ Yards: 0% value

These numbers are then adjusted based on down, distance, situation, opponent, and the difference in rushing average between shotgun compared to standard formations. Finally, we normalize the numbers so that the league average for Adjusted Line Yards per carry is the same as the league average for RB yards per carry. These stats are explained further here.

(Please note that opponent adjustments will not be included until after Week 4.)

The following stats are not adjusted for opponent:

  • RB Yards: Yards per carry by that team's running backs, according to standard NFL numbers.
  • Power Success: Percentage of runs on third or fourth down, two yards or less to go, that achieved a first down or touchdown. Also includes runs on first-and-goal or second-and-goal from the two-yard line or closer. This is the only statistic on this page that includes quarterbacks.
  • Stuffed: Percentage of runs where the running back is tackled at or behind the line of scrimmage. Since being stuffed is bad, teams are ranked from stuffed least often (#1) to most often (#32).
  • Second Level Yards: Yards which this team's running backs earn between 5-10 yards past the line of scrimmage, divided by total running back carries.
  • Open Field Yards: Yards which this team's running backs earn more than 10 yards past the line of scrimmage, divided by total running back carries.

NFL averages for each stat given in red.

Why are these rankings different from the team offense DVOA ratings for rushing? Among other reasons, they don't include quarterbacks or fumbles, long runs are truncated, and a different set of adjustments is used, attempting to isolate line play rather than total team offense.

A team with a high ranking in Adjusted Line Yards but a low ranking in Open Field Yards is heavily dependent on its offensive line to make the running game work. A team with a low ranking in Adjusted Line Yards but a high ranking in Open Field Yards is heavily dependent on its running back breaking long runs to make the running game work.

However, it is important to understand that these ratings only somewhat separate the offensive line from the running backs. A team with a very good running back will appear higher no matter how bad their line, and a team with a great line with appear lower if the running back is terrible.

Stats in blue represent pass blocking. Teams are ranked according to Adjusted Sack Rate, which gives sacks (plus intentional grounding penalties) per pass attempt adjusted for down, distance, and opponent. Pass blocking stats are explained further here. Our sack totals may differ slightly from official NFL totals depending on the league's retroactive statistical adjustments.

RUN BLOCKING PASS PROTECTION
Team Adj. Line
Yards
RB
Yards
Power
Success
Power
Rank
Stuffed Stuffed
Rank
2nd Level
Yards
2nd Level
Rank
Open Field
Yards
Open Field
Rank
Team Rank Sacks Adjusted
Sack Rate
1 SEA 5.26 5.29 67% 19 9% 4 1.79 1 0.44 19 CIN 1 0 0.0%
2 DAL 5.23 5.20 100% 3 14% 10 1.72 2 0.62 16 SD 2 1 1.2%
3 NO 5.19 5.18 80% 11 6% 2 1.44 9 0.92 10 BUF 3 1 1.9%
4 ATL 5.02 4.66 75% 12 8% 3 1.29 11 0.45 18 HOU 4 1 2.5%
5 MIA 5.00 5.04 80% 10 4% 1 1.56 6 0.33 23 NO 5 2 2.6%
6 TEN 4.88 5.14 100% 8 9% 5 1.63 4 0.63 15 OAK 6 2 2.9%
7 BAL 4.79 5.02 50% 22 19% 20 1.57 5 1.02 7 DEN 7 2 3.4%
8 WAS 4.63 5.07 50% 26 16% 15 1.68 3 0.96 8 BAL 8 3 3.6%
9 NE 4.50 3.96 70% 17 15% 13 1.25 14 0.19 26 ATL 9 3 3.6%
10 STL 4.34 3.66 100% 7 10% 6 1.00 22 0.07 30 IND 10 3 3.7%
11 CIN 4.32 3.85 75% 13 13% 9 1.10 20 0.18 27 CHI 11 3 4.0%
12 CLE 4.22 5.12 75% 14 16% 14 1.50 7 1.19 5 CLE 12 4 5.3%
13 ARI 4.06 4.46 100% 1 15% 12 1.20 18 0.93 9 NYG 13 4 5.5%
14 DEN 4.05 4.20 100% 4 18% 17 1.20 16 0.75 11 DET 14 5 5.7%
15 IND 3.99 4.30 50% 25 12% 7 1.28 12 0.67 12 PHI 15 5 6.0%
16 NYJ 3.92 4.76 86% 9 20% 22 1.20 17 1.18 6 SEA 16 3 6.0%
RUN BLOCKING PASS PROTECTION
Team Adj. Line
Yards
RB
Yards
Power
Success
Power
Rank
Stuffed Stuffed
Rank
2nd Level
Yards
2nd Level
Rank
Open Field
Yards
Open Field
Rank
Team Rank Sacks Adjusted
Sack Rate
17 GB 3.91 3.60 50% 24 14% 11 0.89 25 0.20 25 NE 17 5 6.2%
18 HOU 3.91 3.97 63% 21 18% 16 1.07 21 0.53 17 MIA 18 5 6.2%
19 SF 3.78 4.16 33% 29 26% 24 1.26 13 0.67 13 NYJ 19 4 6.3%
20 PIT 3.68 4.67 67% 18 13% 8 1.21 15 1.21 4 TB 20 4 7.1%
21 DET 3.64 3.17 0% 31 26% 26 1.00 23 0.10 29 KC 21 6 7.3%
22 CHI 3.47 3.57 100% 2 27% 27 1.13 19 0.23 24 CAR 22 5 8.2%
23 BUF 3.27 5.04 50% 23 18% 18 0.93 24 1.95 2 SF 23 5 8.2%
24 NYG 3.27 2.79 29% 30 19% 21 0.55 31 0.17 28 PIT 24 6 8.2%
25 KC 3.25 3.30 33% 28 19% 19 0.65 30 0.65 14 TEN 25 6 8.4%
26 TB 3.24 5.38 67% 20 31% 30 1.38 10 2.29 1 ARI 26 6 8.5%
27 OAK 3.22 2.96 75% 15 33% 31 0.75 29 0.07 31 GB 27 7 8.7%
28 MIN 3.04 3.31 100% 5 23% 23 0.85 27 0.38 22 WAS 28 6 8.9%
29 PHI 2.61 4.46 71% 16 36% 32 1.46 8 1.50 3 STL 29 7 9.8%
30 CAR 2.59 2.76 40% 27 31% 29 0.82 28 0.41 21 DAL 30 7 9.9%
31 SD 2.45 2.83 100% 6 26% 25 0.85 26 0.43 20 MIN 31 7 10.3%
32 JAC 2.17 2.06 0% 32 29% 28 0.55 32 0.03 32 JAC 32 13 15.4%
x NFL x 4.23 67% x 18% x 1.07 x 0.62 x NFL x 4 6.2%

The second table lists each team's Adjusted Line Yards in each direction listed in official NFL play-by-play, along with rank among the 32 teams. Only five directions are listed because research so far shows no statistically significant difference between how well a team performs on runs listed middle, left guard, and right guard.

LEFT END LEFT TACKLE MID/GUARD RIGHT TACKLE RIGHT END
TEAM ALY Rank ALY Rank ALY Rank ALY Rank ALY Rank
1 SEA 5.29 8 5.14 5 5.28 4 6.32 4 3.89 13
2 DAL 5.90 4 6.56 1 4.86 7 4.94 10 3.71 14
3 NO 5.15 11 4.79 8 5.48 2 7.35 1 3.43 17
4 ATL 1.54 26 5.43 4 5.51 1 6.10 6 2.73 20
5 MIA 5.01 13 4.74 9 5.11 5 4.65 12 5.31 6
6 TEN 9.75 1 3.72 16 4.92 6 0.00 31 2.12 23
7 BAL 5.13 12 4.21 11 3.43 24 6.14 5 10.21 1
8 WAS 4.16 18 5.49 3 5.40 3 4.34 14 3.94 11
9 NE 2.31 24 3.56 19 4.42 13 6.67 3 5.14 8
10 STL 8.70 2 2.70 24 4.29 15 3.56 17 0.00 29
11 CIN 3.37 21 0.10 30 4.55 9 6.79 2 2.68 21
12 CLE 5.15 10 5.87 2 2.82 28 5.92 7 2.97 19
13 ARI 5.79 6 3.05 22 3.97 18 2.80 20 5.25 7
14 DEN 2.31 25 2.85 23 4.42 12 3.31 19 5.64 5
15 IND 5.88 5 3.74 15 4.40 14 3.90 16 0.25 27
16 NYJ -1.26 31 2.63 26 4.52 11 4.89 11 6.50 4
LEFT END LEFT TACKLE MID/GUARD RIGHT TACKLE RIGHT END
TEAM ALY Rank ALY Rank ALY Rank ALY Rank ALY Rank
17 GB 5.17 9 2.27 28 4.24 16 4.97 8 0.27 26
18 HOU 6.29 3 3.59 18 3.79 22 4.02 15 6.80 3
19 SF 3.54 20 3.46 21 3.79 21 4.50 13 3.90 12
20 PIT 4.52 17 0.00 31 3.87 19 2.60 22 0.00 31
21 DET 3.82 19 2.67 25 4.68 8 1.99 26 7.01 2
22 CHI 4.88 14 4.73 10 2.58 29 2.47 24 4.89 9
23 BUF 0.71 29 3.82 13 3.31 26 4.94 9 0.84 25
24 NYG 0.85 28 3.80 14 3.41 25 3.40 18 0.00 30
25 KC -0.18 30 4.93 6 3.71 23 2.28 25 3.40 18
26 TB -1.94 32 2.28 27 4.20 17 1.33 29 4.87 10
27 OAK 1.18 27 3.86 12 4.53 10 1.65 28 -0.26 32
28 MIN 4.86 15 4.92 7 2.02 32 2.65 21 3.65 15
29 PHI 3.14 22 0.46 29 2.36 30 0.11 30 3.59 16
30 CAR 4.73 16 3.52 20 2.04 31 1.75 27 2.29 22
31 SD 5.70 7 3.64 17 3.01 27 -1.18 32 0.07 28
32 JAC 3.01 23 -5.98 32 3.85 20 2.57 23 1.22 24
x NFL 3.75 x 3.33 x 3.99 x 3.68 x 3.32 x

The third table lists how often each team runs in each direction. Numbers may not add up to 100% due to carries listed without direction.

Team RB
Carries
LEFT
END
LEFT
TACKLE
MID/
GUARD
RIGHT
TACKLE
RIGHT
END
1 HOU 74 3% 22% 50% 24% 1%
2 DAL 65 12% 20% 49% 9% 9%
3 CIN 60 13% 7% 52% 18% 10%
4 CLE 58 7% 14% 47% 26% 7%
5 WAS 57 25% 7% 32% 18% 19%
6 PHI 56 27% 7% 46% 2% 18%
7 BUF 55 7% 16% 58% 13% 5%
8 NYJ 54 13% 11% 52% 7% 17%
9 MIA 52 2% 23% 60% 8% 8%
10 NE 52 8% 13% 54% 12% 13%
11 NO 50 22% 16% 30% 14% 18%
12 CAR 49 16% 6% 65% 2% 10%
13 BAL 47 6% 13% 45% 32% 4%
14 NYG 47 9% 21% 49% 21% 0%
15 ARI 46 9% 7% 52% 17% 15%
16 SD 46 9% 7% 61% 11% 13%
Team RB
Carries
LEFT
END
LEFT
TACKLE
MID/
GUARD
RIGHT
TACKLE
RIGHT
END
17 DEN 44 9% 7% 68% 11% 5%
18 IND 43 16% 19% 44% 9% 12%
19 SF 43 5% 23% 51% 9% 12%
20 TEN 43 2% 7% 88% 0% 2%
21 DET 42 10% 17% 29% 33% 12%
22 TB 42 5% 17% 55% 14% 10%
23 STL 41 5% 2% 76% 17% 0%
24 MIN 39 13% 10% 41% 23% 13%
25 PIT 39 5% 0% 77% 18% 0%
26 ATL 38 5% 13% 37% 29% 16%
27 KC 37 11% 11% 62% 11% 5%
28 GB 35 14% 11% 51% 14% 9%
29 SEA 34 6% 26% 38% 18% 12%
30 JAC 31 32% 3% 16% 13% 35%
31 CHI 30 23% 3% 40% 20% 13%
32 OAK 27 19% 19% 48% 7% 7%
x NFL x 11% 12% 51% 15% 10%