who has the lowest passer rating in a season since 1980

Since 1980, Ryan Leaf has the worst passer rating in a season, with a 39.0 rating in his rookie season in 1998.

Interpreted as:
Who has the lowest passer rating with a minimum of 14 passing attempts per team game in a season since 1980?
NAMERTGSEASONTMGPCMPATTPCTYDSAVGYDS/GTDINTTD%INT%SCKSCKY
1Ryan Leaf
R. Leaf
39.0
1998
10
111
245
45.3
1,289
5.3
128.9
2
15
0.8
6.1
22
140
2Bobby Hoying
B. Hoying
45.6
1998
8
114
224
50.9
961
4.3
120.1
0
9
0.0
4.0
35
185
3Mark Malone
M. Malone
46.7
1987
12
156
336
46.4
1,896
5.6
158.0
6
19
1.8
5.7
18
151
4Craig Whelihan
C. Whelihan
48.0
1998
10
149
320
46.6
1,803
5.6
180.3
8
19
2.5
5.9
15
111
5Vinny Testaverde
V. Testaverde
48.8
1988
15
222
466
47.6
3,240
7.0
216.0
13
35
2.8
7.5
33
292
6Rusty Hilger
R. Hilger
48.9
1988
11
126
306
41.2
1,558
5.1
141.6
7
12
2.3
3.9
31
251
7JaMarcus Russell
J. Russell
50.0
2009
12
120
246
48.8
1,287
5.2
107.3
3
11
1.2
4.5
33
207
8Jake Plummer
J. Plummer
50.8
1999
12
201
381
52.8
2,111
5.5
175.9
9
24
2.4
6.3
27
152
9Vince Ferragamo
V. Ferragamo
50.8
1985
10
149
287
51.9
1,677
5.8
167.7
5
17
1.7
5.9
19
135
10Vince Evans
V. Evans
51.1
1981
16
195
436
44.7
2,354
5.4
147.1
11
20
2.5
4.6
23
173
11Akili Smith
A. Smith
52.8
2000
12
118
267
44.2
1,253
4.7
104.4
3
6
1.1
2.2
36
191
12Stan Gelbaugh
S. Gelbaugh
52.9
1992
10
121
255
47.5
1,307
5.1
130.7
6
11
2.4
4.3
34
265
13Jack Trudeau
J. Trudeau
53.5
1986
12
204
417
48.9
2,225
5.3
185.4
8
18
1.9
4.3
29
213
14Bruce Mathison
B. Mathison
53.5
1985
10
113
228
49.6
1,635
7.2
163.5
4
14
1.8
6.1
22
203
15Scott Brunner
S. Brunner
54.3
1983
16
190
386
49.2
2,516
6.5
157.3
9
22
2.3
5.7
31
218
16John Elway
J. Elway
54.9
1983
11
123
259
47.5
1,663
6.4
151.2
7
14
2.7
5.4
28
218
17Jeff Kemp
J. Kemp
55.7
1991
TOT
14
151
295
51.2
1,753
5.9
125.2
9
17
3.1
5.8
20
99
18Troy Aikman
T. Aikman
55.7
1989
11
155
293
52.9
1,749
6.0
159.0
9
18
3.1
6.1
19
155
19Browning Nagle
B. Nagle
55.7
1992
14
192
387
49.6
2,280
5.9
162.9
7
17
1.8
4.4
27
215
20Kerry Collins
K. Collins
55.7
1997
13
200
381
52.5
2,124
5.6
163.4
11
21
2.9
5.5
27
200
21Andrew Walter
A. Walter
55.8
2006
12
147
276
53.3
1,677
6.1
139.8
3
13
1.1
4.7
46
256
22Ryan Leaf
R. Leaf
56.2
2000
11
161
322
50.0
1,883
5.8
171.2
11
18
3.4
5.6
31
155
23Joe Ferguson
J. Ferguson
56.3
1982
9
144
264
54.5
1,597
6.0
177.4
7
16
2.7
6.1
11
105
24Mark Rypien
M. Rypien
56.3
1993
12
166
319
52.0
1,514
4.7
126.2
4
10
1.3
3.1
16
87
25David Archer
D. Archer
56.5
1985
16
161
312
51.6
1,992
6.4
124.5
7
17
2.2
5.4
43
312
StatMuse has season-level data for pass attempts per team game and passer rating going back to the 1932 season.

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