Which QB has the highest completion percentage in a season?

Drew Brees finished 2018 with a 74.4 completion percentage, breaking his own record for best in a season in NFL history.

Interpreted as:
Which QB has the highest completion percentage with a minimum of 14 passing attempts per team game in a season?
NAMESEASONTMGPPCTCMPATTYDSAVGYDS/GTDTD%INTINT%SCKSCKYRATE
1Drew Brees
Drew Brees
2018
NO NO
15
74.4
364
489
3,992
8.2
266.1
32
6.5
5
1.0
17
121
115.7
2Drew Brees
Drew Brees
2017
NO NO
16
72.0
386
536
4,334
8.1
270.9
23
4.3
8
1.5
20
145
103.9
3Sam Bradford
Sam Bradford
2016
MIN MIN
15
71.6
395
552
3,877
7.0
258.5
20
3.6
5
0.9
37
276
99.3
4Drew Brees
Drew Brees
2011
NO NO
16
71.2
468
657
5,476
8.3
342.3
46
7.0
14
2.1
24
158
110.6
5Drew Brees
Drew Brees
2009
NO NO
15
70.6
363
514
4,388
8.5
292.5
34
6.6
11
2.1
20
135
109.6
6Ken Anderson
Ken Anderson
1982
CIN CIN
9
70.6
218
309
2,495
8.1
277.2
12
3.9
9
2.9
26
154
95.3
7Sammy Baugh
Sammy Baugh
1945
WAS WAS
8
70.3
128
182
1,669
9.2
208.6
11
6.0
4
2.2
109.9
8Steve Young
Steve Young
1994
SF SF
16
70.3
324
461
3,969
8.6
248.1
35
7.6
10
2.2
31
163
112.8
9Joe Montana
Joe Montana
1989
SF SF
13
70.2
271
386
3,521
9.1
270.8
26
6.7
8
2.1
33
198
112.4
10Kirk Cousins
Kirk Cousins
2018
MIN MIN
16
70.1
425
606
4,298
7.1
268.6
30
5.0
10
1.7
40
262
99.7
11Drew Brees
Drew Brees
2016
NO NO
16
70.0
471
673
5,208
7.7
325.5
37
5.5
15
2.2
27
184
101.7
12Tony Romo
Tony Romo
2014
DAL DAL
15
69.9
304
435
3,705
8.5
247.0
34
7.8
9
2.1
29
215
113.2
13Matt Ryan
Matt Ryan
2016
ATL ATL
16
69.9
373
534
4,944
9.3
309.0
38
7.1
7
1.3
37
235
117.1
14Kirk Cousins
Kirk Cousins
2015
WAS WAS
16
69.8
379
543
4,166
7.7
260.4
29
5.3
11
2.0
26
186
101.6
15Carson Wentz
Carson Wentz
2018
PHI PHI
11
69.6
279
401
3,074
7.7
279.5
21
5.2
7
1.7
31
202
102.2
16Philip Rivers
Philip Rivers
2013
SD SD
16
69.5
378
544
4,478
8.2
279.9
32
5.9
11
2.0
30
150
105.5
17Matt Ryan
Matt Ryan
2018
ATL ATL
16
69.4
422
608
4,924
8.1
307.8
35
5.8
7
1.2
42
296
108.1
18Brian Griese
Brian Griese
2004
TB TB
11
69.3
233
336
2,632
7.8
239.3
20
6.0
12
3.6
26
169
97.5
19Drew Brees
Drew Brees
2014
NO NO
16
69.2
456
659
4,952
7.5
309.5
33
5.0
17
2.6
29
186
97.0
20Daunte Culpepper
Daunte Culpepper
2004
MIN MIN
16
69.2
379
548
4,717
8.6
294.8
39
7.1
11
2.0
46
238
110.9
21Troy Aikman
Troy Aikman
1993
DAL DAL
14
69.1
271
392
3,100
7.9
221.4
15
3.8
6
1.5
26
153
99.0
22Chad Pennington
Chad Pennington
2002
NYJ NYJ
15
68.9
275
399
3,120
7.8
208.0
22
5.5
6
1.5
22
135
104.2
23Derek Carr
Derek Carr
2018
OAK OAK
16
68.9
381
553
4,049
7.3
253.1
19
3.4
10
1.8
51
299
93.9
24Marcus Mariota
Marcus Mariota
2018
TEN TEN
14
68.9
228
331
2,528
7.6
180.6
11
3.3
8
2.4
42
243
92.3
25Tom Brady
Tom Brady
2007
NE NE
16
68.9
398
578
4,806
8.3
300.4
50
8.7
8
1.4
21
128
117.2
StatMuse has season-level data for completion percentage and pass attempts per team game going back to the 1932 season.

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