What Pass cmp perc (allowed) is

Completion percentage allowed: opponent completions divided by opponent attempts. The familiar accuracy number from the defense's side — a defense that gives up checkdowns and nothing else can look bad here while playing well.

Lower is better. It is a rate, so a team's number does not grow with games played. Source: P + N.

In 2021 the Bills led at 55.62; the league average was 64.34.

League snapshot — 2021

League leader

BUF · 55.62

League average

64.34

Best to worst

13.68

All 32 teams, lower is better.

Rank	Team	Value	Games
1	BUF	55.62	17
2	DAL	59.00	17
3	NE	59.07	17
4	DEN	60.35	17
5	MIA	61.25	17
6	NO	62.23	17
7	GB	62.34	17
8	TEN	62.40	17
9	PIT	62.83	17
10	CLE	63.06	17
11	LAC	63.30	17
12	BAL	63.32	17
13	MIN	63.45	17
14	CAR	64.56	17
15	IND	64.89	17
16	ARI	64.96	17
17	KC	65.31	17
18	TB	65.35	17
19	CHI	65.42	17
20	DET	65.51	17
21	LV	65.57	17
22	NYG	65.69	17
23	HOU	66.12	17
24	LAR	66.24	17
25	WAS	66.45	17
26	CIN	66.56	17
27	SEA	67.02	17
28	ATL	67.07	17
29	SF	67.76	17
30	NYJ	67.85	17
31	PHI	68.97	17
32	JAX	69.30	17

At a glance — 2021

Where the 32 teams sit on this stat this season.

League leader

BUF · 55.62

League laggard

JAX · 69.30

League average

64.34

Spread (max − min)

13.68

Rank	Team	Value	Δ vs avg	Percentile
1	BUF	55.62	-8.72	100%
2	DAL	59.00	-5.34	96.8%
3	NE	59.07	-5.26	93.5%
4	DEN	60.35	-3.98	90.3%
5	MIA	61.25	-3.09	87.1%
6	NO	62.23	-2.11	83.9%
7	GB	62.34	-2.00	80.6%
8	TEN	62.40	-1.94	77.4%
9	PIT	62.83	-1.51	74.2%
10	CLE	63.06	-1.28	71%
11	LAC	63.30	-1.04	67.7%
12	BAL	63.32	-1.02	64.5%
13	MIN	63.45	-0.89	61.3%
14	CAR	64.56	0.22	58.1%
15	IND	64.89	0.55	54.8%
16	ARI	64.96	0.62	51.6%
17	KC	65.31	0.97	48.4%
18	TB	65.35	1.01	45.2%
19	CHI	65.42	1.08	41.9%
20	DET	65.51	1.17	38.7%
21	LV	65.57	1.24	35.5%
22	NYG	65.69	1.35	32.3%
23	HOU	66.12	1.78	29%
24	LAR	66.24	1.90	25.8%
25	WAS	66.45	2.11	22.6%
26	CIN	66.56	2.22	19.4%
27	SEA	67.02	2.68	16.1%
28	ATL	67.07	2.73	12.9%
29	SF	67.76	3.42	9.7%
30	NYJ	67.85	3.51	6.5%
31	PHI	68.97	4.63	3.2%
32	JAX	69.30	4.96	0%

Does Pass cmp perc (allowed) matter against the spread?

Run as a one-stat algorithm against the closing line, this stat went 847–731–37 ATS (53.7%) across 2020–2025, #112 of 296 ranked.

Its best season was 2020 (146–108, 57.5%); its worst 2024 (125–138, 47.5%).

For picks, this is a modest signal. One stat is not a recipe — the algorithms combine many.

Season	Games	ATS record	ATS %
2020	256	146–108–2	57.5%
2021	272	147–123–2	54.4%
2022	271	147–117–7	55.7%
2023	272	134–124–14	51.9%
2024	272	125–138–9	47.5%
2025	272	148–121–3	55.0%

Pass cmp perc (allowed) in 2021 vs 2020

Bills lead at 55.62 — they ranked #14 last year. Jaguars are last at 69.30 — #32 last year.

The league average is 64.34, down 0.51 from 64.85 last year.

Biggest riser: Patriots, #24 → #3. Biggest faller: Commanders, #3 → #25.

Spread between first and last: 13.68; 23 teams are within 2.99 of the average.

Year-over-year — 2021 vs 2020

Biggest movers from last season.

Biggest riser

PIT · +6.50

Biggest faller

NE · −8.20

Most consistent

JAX · +0.01

League trend 2021 vs 2020

▼ -0.51

Rank	Team	2021	2020	Δ
1	PIT	62.83	56.33	+6.50
2	SF	67.76	63.27	+4.49
3	WAS	66.45	62.15	+4.30
4	CIN	66.56	62.50	+4.06
5	KC	65.31	62.21	+3.10
6	NO	62.23	59.25	+2.97
7	LAR	66.24	63.32	+2.92
8	LV	65.57	63.25	+2.33
9	CHI	65.42	63.87	+1.55
10	LAC	63.30	62.16	+1.14
11	ARI	64.96	63.92	+1.03
12	SEA	67.02	66.27	+0.75
13	PHI	68.97	68.55	+0.42
14	CLE	63.06	62.99	+0.07
15	JAX	69.30	69.29	+0.01
16	BAL	63.32	63.44	−0.12
17	ATL	67.07	67.68	−0.61
18	IND	64.89	65.66	−0.77
19	NYJ	67.85	68.98	−1.13
20	NYG	65.69	67.01	−1.33
21	MIA	61.25	62.94	−1.69
22	GB	62.34	64.31	−1.98
23	MIN	63.45	65.57	−2.12
24	DET	65.51	68.39	−2.88
25	HOU	66.12	69.05	−2.93
26	CAR	64.56	67.69	−3.13
27	TB	65.35	68.71	−3.36
28	TEN	62.40	66.51	−4.11
29	DAL	59.00	63.20	−4.20
30	DEN	60.35	65.73	−5.38
31	BUF	55.62	63.73	−8.11
32	NE	59.07	67.27	−8.20

Multi-year context

7-year window (2020–2026)

Multi-year leader

CLE · 61.05

Multi-year laggard

TEN · 67.15

Biggest improver

PHI · −1.62/yr

Biggest decliner

MIA · +2.11/yr

Rank	Team	Avg	Slope/yr	2020	2021	2022	2023	2024	2025	2026
1	CLE	61.05	−0.38	62.99	63.06	60.46	57.06	61.72	62.99	59.09
2	PIT	62.01	+1.11	56.33	62.83	61.03	60.42	64.86	64.08	64.56
3	NO	62.12	+1.26	59.25	62.23	59.74	59.15	61.41	63.41	69.68
4	DEN	62.41	−1.07	65.73	60.35	64.58	66.43	64.53	57.65	57.58
5	LAR	62.77	−1.30	63.32	66.24	67.32	60.16	65.07	63.58	53.69
6	BUF	62.99	+0.66	63.73	55.62	63.18	65.29	68.04	59.06	66.01
7	LAC	63.03	+0.18	62.16	63.30	61.14	64.94	64.61	60.55	64.54
8	BAL	63.37	+0.01	63.44	63.32	66.22	59.91	62.66	63.33	64.74
9	CIN	63.46	+0.00	62.50	66.56	58.65	65.35	64.70	64.68	61.76
10	MIN	63.55	−1.44	65.57	63.45	65.49	70.30	64.54	62.28	53.21
11	PHI	63.56	−1.62	68.55	68.97	62.50	64.79	61.50	56.59	62.01
12	WAS	63.58	+0.24	62.15	66.45	59.81	65.89	60.91	64.58	65.26
13	KC	63.85	−0.11	62.21	65.31	65.70	61.15	65.79	66.41	60.40
14	NE	63.88	+0.46	67.27	59.07	60.77	63.79	64.55	66.04	65.64
15	DET	63.98	−0.52	68.39	65.51	62.37	62.77	60.75	60.96	67.13
16	NYJ	64.07	−0.90	68.98	67.85	62.30	59.73	62.17	64.99	62.50
17	HOU	64.35	−0.97	69.05	66.12	64.24	66.90	58.53	58.75	66.85
18	DAL	64.60	+1.79	63.20	59.00	62.27	59.92	67.77	67.91	72.14
19	SEA	64.62	−0.62	66.27	67.02	62.48	66.55	64.97	62.09	62.99
20	GB	64.83	+0.24	64.31	62.34	65.55	65.14	67.08	65.22	64.15
21	ATL	65.04	−0.94	67.68	67.07	66.07	61.71	69.66	61.99	61.14
22	CHI	65.07	−0.10	63.87	65.42	66.60	66.02	64.23	65.99	63.36
23	CAR	65.14	−0.61	67.69	64.56	65.69	63.98	67.54	66.27	60.27
24	NYG	65.19	−0.03	67.01	65.69	61.34	63.75	69.11	64.62	64.81
25	IND	65.38	−0.37	65.66	64.89	67.10	65.14	68.98	63.02	62.87
26	LV	65.41	−0.01	63.25	65.57	67.06	66.55	65.49	67.86	62.11
27	SF	65.58	+0.11	63.27	67.76	65.38	65.50	65.00	67.80	64.37
28	JAX	65.80	−0.90	69.29	69.30	63.43	65.27	66.61	61.88	64.80
29	TB	65.89	−0.13	68.71	65.35	63.30	65.48	66.24	66.26	65.87
30	ARI	66.23	−0.12	63.92	64.96	69.58	68.31	68.52	65.45	62.86
31	MIA	67.01	+2.11	62.94	61.25	66.35	66.67	63.59	71.76	76.55
32	TEN	67.15	+1.28	66.51	62.40	64.94	67.54	66.11	68.60	73.97

Multi-year heatmap

32 teams across 7 seasons. Cells colored by quintile within each season; click a column header to jump to that year.

Team	2020	2021	2022	2023	2024	2025	2026
BUF	63.73	55.62	63.18	65.29	68.04	59.06	66.01
DAL	63.20	59.00	62.27	59.92	67.77	67.91	72.14
NE	67.27	59.07	60.77	63.79	64.55	66.04	65.64
DEN	65.73	60.35	64.58	66.43	64.53	57.65	57.58
MIA	62.94	61.25	66.35	66.67	63.59	71.76	76.55
NO	59.25	62.23	59.74	59.15	61.41	63.41	69.68
GB	64.31	62.34	65.55	65.14	67.08	65.22	64.15
TEN	66.51	62.40	64.94	67.54	66.11	68.60	73.97
PIT	56.33	62.83	61.03	60.42	64.86	64.08	64.56
CLE	62.99	63.06	60.46	57.06	61.72	62.99	59.09
LAC	62.16	63.30	61.14	64.94	64.61	60.55	64.54
BAL	63.44	63.32	66.22	59.91	62.66	63.33	64.74
MIN	65.57	63.45	65.49	70.30	64.54	62.28	53.21
CAR	67.69	64.56	65.69	63.98	67.54	66.27	60.27
IND	65.66	64.89	67.10	65.14	68.98	63.02	62.87
ARI	63.92	64.96	69.58	68.31	68.52	65.45	62.86
KC	62.21	65.31	65.70	61.15	65.79	66.41	60.40
TB	68.71	65.35	63.30	65.48	66.24	66.26	65.87
CHI	63.87	65.42	66.60	66.02	64.23	65.99	63.36
DET	68.39	65.51	62.37	62.77	60.75	60.96	67.13
LV	63.25	65.57	67.06	66.55	65.49	67.86	62.11
NYG	67.01	65.69	61.34	63.75	69.11	64.62	64.81
HOU	69.05	66.12	64.24	66.90	58.53	58.75	66.85
LAR	63.32	66.24	67.32	60.16	65.07	63.58	53.69
WAS	62.15	66.45	59.81	65.89	60.91	64.58	65.26
CIN	62.50	66.56	58.65	65.35	64.70	64.68	61.76
SEA	66.27	67.02	62.48	66.55	64.97	62.09	62.99
ATL	67.68	67.07	66.07	61.71	69.66	61.99	61.14
SF	63.27	67.76	65.38	65.50	65.00	67.80	64.37
NYJ	68.98	67.85	62.30	59.73	62.17	64.99	62.50
PHI	68.55	68.97	62.50	64.79	61.50	56.59	62.01
JAX	69.29	69.30	63.43	65.27	66.61	61.88	64.80

Pass cmp perc (allowed) since 2018

Leaders since 2018: 2018 Ravens (58.00), 2019 Patriots (56.53), 2020 Steelers (56.33), 2021 Bills (55.62).

The best season on record is Bills 2021 at 55.62; the worst Buccaneers 2018 at 72.34.

Distribution

How the 32 teams cluster for 2021.

About this stat

Stat ID: def_passing_pass_cmp_perc
Side: defensive
Family: Passing
Data source: P + N
Polarity: lower is better
Display grain: rate
Algorithm eligibility: Algorithm-eligible: this stat can be picked in the Algorithm Builder.