which qb had the highest touchdown percentage in a single season

4 quarterbacks are tied for the highest passing touchdown percentage by a quarterback in a season, at 100.0 percent. The first three are Tommy Maddox in 1993, Guido Merkens in 1985 and Chuck Fusina in 1981.

NAMETD%SEASONTMGPCMPATTPCTYDSAVGYDS/GTDINTRTGINT%SCKSCKY
1Tommy Maddox
T. Maddox
100.0
1993
16
1
1
100.0
1
1.0
0.1
1
0
118.8
0.0
0
0
2Guido Merkens
G. Merkens
100.0
1985
16
1
1
100.0
7
7.0
0.4
1
0
135.4
0.0
1
10
3Chuck Fusina
C. Fusina
100.0
1981
4
1
1
100.0
2
2.0
0.5
1
0
118.8
0.0
0
0
4Red Kirkman
R. Kirkman
100.0
1935
1
1
1
100.0
1
1.0
1.0
1
0
118.8
0.0
5Nate Sudfeld
N. Sudfeld
50.0
2018
2
1
2
50.0
22
11.0
11.0
1
0
129.2
0.0
0
0
6Cary Conklin
C. Conklin
50.0
1992
1
2
2
100.0
16
8.0
16.0
1
0
139.6
0.0
0
0
7Kevin Ingram
K. Ingram
50.0
1987
2
1
2
50.0
5
2.5
2.5
1
0
95.8
0.0
1
6
8Tom Sherman
T. Sherman
50.0
1969
TOT
5
2
2
100.0
20
10.0
4.0
1
0
147.9
0.0
0
0
9Bob Waters
B. Waters
50.0
1960
8
2
2
100.0
61
30.5
7.6
1
0
158.3
0.0
10Bobby Clatterbuck
B. Clatterbuck
50.0
1957
1
2
2
100.0
39
19.5
39.0
1
0
158.3
0.0
11Gary Kerkorian
G. Kerkorian
50.0
1956
3
2
2
100.0
59
29.5
19.7
1
0
158.3
0.0
12Malik Willis
M. Willis
33.3
2025
2
3
3
100.0
13
4.3
6.5
1
0
124.3
0.0
0
0
13Vinny Testaverde
V. Testaverde
33.3
2006
3
2
3
66.7
29
9.7
9.7
1
0
137.5
0.0
0
0
14Shane Matthews
S. Matthews
33.3
2004
3
2
3
66.7
44
14.7
14.7
1
0
149.3
0.0
0
0
15Bernard Quarles
B. Quarles
33.3
1987
1
1
3
33.3
40
13.3
40.0
1
1
81.9
33.3
0
0
16Jeff Rutledge
J. Rutledge
33.3
1986
16
1
3
33.3
13
4.3
0.8
1
0
87.5
0.0
0
0
17Bernie Masterson
B. Masterson
33.3
1934
9
3
3
100.0
39
13.0
4.3
1
0
158.3
0.0
18Reggie Collier
R. Collier
28.6
1987
2
4
7
57.1
110
15.7
55.0
2
1
101.8
14.3
1
3
19Tony Romo
T. Romo
25.0
2016
1
3
4
75.0
29
7.3
29.0
1
0
134.4
0.0
0
0
20Brian St. Pierre
B. St. Pierre
25.0
2009
1
2
4
50.0
12
3.0
12.0
1
1
56.3
25.0
0
0
21Troy Smith
T. Smith
25.0
2008
6
3
4
75.0
82
20.5
13.7
1
0
156.3
0.0
1
1
22Mark Stevens
M. Stevens
25.0
1987
2
2
4
50.0
52
13.0
26.0
1
0
135.4
0.0
0
0
23Terry Bradshaw
T. Bradshaw
25.0
1983
1
5
8
62.5
77
9.6
77.0
2
0
133.9
0.0
0
0
24Gifford Nielsen
G. Nielsen
25.0
1980
16
2
4
50.0
12
3.0
0.8
1
0
95.8
0.0
0
0
25Carlos Brown
C. Brown
25.0
1975
13
3
4
75.0
63
15.8
4.8
1
0
156.3
0.0
0
0
StatMuse has season-level data for passing touchdown percentage going back to the 1932 season.

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