Writers of Pro Football Prospectus 2008

OFFENSIVE LINES 1999

Regular season totals, through Week 17

Revised as of 8/8/2012

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.

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 10+ 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 10+ 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 WAS 4.79 4.60 69% 6 16% 1 1.37 2 0.73 13 IND 1 14 3.2%
2 STL 4.46 4.81 60% 16 22% 17 1.46 1 1.11 4 TEN 2 26 4.4%
3 DAL 4.28 4.22 61% 13 19% 7 1.15 10 0.74 12 KC 3 27 5.2%
4 MIN 4.25 4.26 56% 26 21% 11 1.21 7 0.79 10 CHI 4 37 5.4%
5 PIT 4.24 4.15 60% 15 19% 6 1.22 6 0.64 14 BUF 5 28 5.6%
6 TEN 4.17 4.02 75% 2 20% 10 1.19 8 0.59 19 DAL 6 24 5.6%
7 NYJ 4.13 4.09 60% 17 18% 3 1.13 12 0.61 17 SF 7 34 5.7%
8 SF 4.08 5.00 65% 9 21% 12 1.34 4 1.47 1 GB 8 36 6.1%
9 KC 4.03 3.97 63% 11 18% 4 1.07 19 0.62 16 DEN 9 34 6.3%
10 JAC 4.03 4.08 65% 8 21% 15 1.10 16 0.84 8 JAC 10 36 6.4%
11 OAK 3.98 4.07 59% 19 21% 14 1.16 9 0.77 11 STL 11 33 6.4%
12 BAL 3.98 4.11 53% 29 20% 8 1.03 22 0.82 9 WAS 12 31 6.4%
13 CIN 3.94 4.57 58% 20 23% 23 1.36 3 1.15 3 PIT 13 37 6.5%
14 PHI 3.92 3.92 58% 23 21% 13 1.12 13 0.56 21 MIA 14 37 6.5%
15 IND 3.91 4.14 61% 14 22% 19 1.15 11 0.94 5 NO 15 41 6.8%
16 GB 3.90 3.87 73% 4 24% 24 1.27 5 0.57 20 NYJ 16 38 7.1%
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 BUF 3.90 3.59 57% 24 20% 9 0.95 23 0.43 25 NYG 17 42 7.2%
18 DEN 3.88 4.09 65% 10 19% 5 1.09 18 0.87 7 SEA 18 38 7.3%
19 NE 3.84 3.48 74% 3 17% 2 0.86 28 0.44 24 SD 19 46 7.7%
20 CAR 3.71 4.28 47% 31 23% 22 1.12 14 1.19 2 CAR 20 49 7.7%
21 ATL 3.67 3.23 63% 12 22% 18 0.94 25 0.24 31 ARI 21 45 8.1%
22 SEA 3.66 3.74 57% 25 23% 21 1.10 17 0.60 18 TB 22 42 8.4%
23 MIA 3.58 3.29 48% 30 25% 27 0.95 24 0.38 27 CIN 23 52 8.5%
24 CHI 3.51 3.41 72% 5 24% 26 1.04 21 0.39 26 OAK 24 49 8.5%
25 NYG 3.50 3.23 58% 22 22% 16 0.82 30 0.38 28 BAL 25 56 8.7%
26 SD 3.45 3.07 75% 1 26% 28 0.74 31 0.38 29 MIN 26 42 8.7%
27 NO 3.42 3.39 59% 18 26% 29 1.04 20 0.47 22 ATL 27 52 9.2%
28 TB 3.40 3.57 55% 28 26% 31 1.11 15 0.62 15 PHI 28 48 9.9%
29 CLE 3.34 3.22 68% 7 23% 20 0.90 26 0.33 30 CLE 29 60 10.1%
30 ARI 3.33 3.14 58% 21 24% 25 0.84 29 0.45 23 NE 30 56 10.2%
31 DET 3.18 3.59 56% 27 26% 30 0.90 27 0.92 6 DET 31 64 10.5%
x NFL x 3.89 61% x 22% x 0.99 x 0.62 x NFL x 40 7.2%

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 31 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 WAS 6.05 1 4.76 2 4.38 4 4.60 6 5.44 2
2 STL 5.45 3 4.47 7 4.04 11 5.76 1 3.58 16
3 DAL 3.62 22 4.13 12 4.46 2 4.93 2 3.46 19
4 MIN 5.05 6 4.24 9 4.21 7 4.72 5 3.19 25
5 PIT 3.42 26 4.10 13 4.51 1 3.95 15 3.84 10
6 TEN 4.85 7 4.62 5 3.63 25 4.04 12 6.55 1
7 NYJ 3.54 23 4.88 1 3.68 23 4.91 3 4.38 6
8 SF 4.01 18 3.44 27 4.28 6 3.60 21 3.70 15
9 KC 5.62 2 4.06 15 4.00 12 4.03 13 3.19 24
10 JAC 4.43 10 4.24 10 4.06 10 3.75 19 3.43 20
11 OAK 4.38 11 3.58 23 4.36 5 3.29 27 3.82 11
12 BAL 4.56 8 3.97 16 4.12 8 3.37 26 2.72 27
13 CIN 4.20 14 4.71 4 3.78 18 3.79 17 3.78 12
14 PHI 4.25 12 4.31 8 3.84 16 3.86 16 3.57 17
15 IND 3.77 19 3.81 20 3.67 24 3.58 22 5.22 3
16 GB 4.14 15 3.46 26 4.40 3 4.29 10 4.64 5
LEFT END LEFT TACKLE MID/GUARD RIGHT TACKLE RIGHT END
TEAM ALY Rank ALY Rank ALY Rank ALY Rank ALY Rank
17 BUF 5.22 5 4.14 11 3.62 26 4.74 4 3.39 22
18 DEN 4.43 9 3.89 17 4.07 9 3.38 25 3.24 23
19 NE 4.04 17 3.27 29 3.92 14 4.58 7 3.14 26
20 CAR 3.45 24 4.72 3 3.47 30 3.95 14 3.76 13
21 ATL 4.10 16 3.53 25 3.69 22 3.50 23 3.75 14
22 SEA 3.65 20 4.56 6 3.78 19 3.49 24 4.77 4
23 MIA 4.22 13 4.08 14 3.58 27 3.15 28 3.40 21
24 CHI 3.43 25 3.38 28 3.71 21 4.23 11 4.16 7
25 NYG 1.93 31 3.59 22 3.86 15 3.77 18 3.98 8
26 SD 2.89 30 3.83 19 4.00 13 4.44 9 3.48 18
27 NO 3.62 21 3.22 30 3.49 29 3.07 29 3.89 9
28 TB 5.24 4 3.85 18 3.74 20 2.93 31 2.10 29
29 CLE 3.00 29 1.75 31 3.84 17 3.65 20 2.44 28
30 ARI 3.09 28 3.74 21 3.53 28 3.04 30 1.51 31
31 DET 3.25 27 3.54 24 3.26 31 4.49 8 1.97 30
x NFL 4.09 x 3.98 x 3.92 x 3.96 x 3.80 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 KC 497 7% 6% 77% 5% 4%
2 JAC 452 12% 20% 45% 17% 6%
3 DAL 450 16% 18% 41% 18% 8%
4 TB 442 6% 8% 65% 11% 7%
5 OAK 439 11% 12% 46% 11% 15%
6 WAS 421 14% 12% 51% 13% 10%
7 BUF 417 6% 15% 61% 12% 6%
8 PIT 416 7% 14% 60% 14% 5%
9 NYJ 414 14% 14% 38% 17% 15%
10 DEN 408 11% 20% 51% 12% 4%
11 MIA 407 7% 12% 54% 17% 9%
12 NO 403 21% 13% 46% 8% 11%
13 STL 388 20% 13% 45% 8% 13%
14 MIN 385 10% 6% 69% 9% 5%
15 IND 382 16% 12% 39% 15% 17%
16 NE 380 10% 13% 61% 9% 6%
Team RB
Carries
LEFT
END
LEFT
TACKLE
MID/
GUARD
RIGHT
TACKLE
RIGHT
END
17 NYG 371 15% 12% 44% 17% 11%
18 SD 367 5% 8% 58% 12% 9%
19 SEA 366 19% 13% 42% 16% 7%
20 TEN 365 13% 21% 50% 11% 5%
21 BAL 363 7% 15% 58% 15% 4%
22 CIN 356 14% 8% 50% 14% 12%
23 PHI 356 10% 13% 54% 14% 9%
24 SF 356 13% 8% 64% 8% 6%
25 GB 350 12% 8% 43% 16% 16%
26 ATL 342 7% 10% 62% 8% 7%
27 CHI 340 7% 17% 51% 15% 5%
28 ARI 337 14% 20% 50% 10% 6%
29 CAR 318 14% 13% 51% 10% 12%
30 DET 306 20% 11% 46% 8% 13%
31 CLE 264 3% 15% 51% 24% 6%
x NFL x 12% 13% 53% 13% 9%