Parker Hall had a 20 * passing touchdowns - 45 * intercepted passes per passing attempt of 177.19 when throwing 200+ pass attempts in his rookie season in 1939.

highestpass yds 20 * pass td - 45 * pass int / pass att by a player in a season with 200 or more pass att
Interpreted as:
highestpass passing yds 20 * pass td - 45 * pass int / pass att by a player in a season with 200 or more pass att
20*TD-45*INT/ATT
1939Hall1939O'Brien1940O'Brien1941Isbell1942Baugh1942Isbell1942Schwenk1942Thompson1943Baugh1943Luckman1945Christman1945Luckman1946Christman1946Luckman1946Waterfield1947Baugh1947Christman1947Governali1947Jacobs1947Luckman1947Thompson1947Waterfield1948Baugh1948Conerly1948Enke177.2116.297.2297.6317.8477.6115.9156.5456.4557.397.5277.9256.5336.9337498.1336.7336.1316.8475.7316.6156.3436.7438216.5
NAMESEASONTMGP20*TD-45*INT/ATTTDINTATTYDSCMPPCTAVGYDS/GTD%INT%SCKSCKYRATE
Parker HallParker Hall1939CLECLE11177.29132081,22710651.05.9111.54.36.357.5
Davey O'BrienDavey O'Brien1939PHIPHI11116.26172011,3249949.36.6120.43.08.545.3
Davey O'BrienDavey O'Brien1940PHIPHI1197.25172771,29012444.84.7117.31.86.139.2
Cecil IsbellCecil Isbell1941GBGB11297.615112061,47911756.87.2134.57.35.381.4
Sammy BaughSammy Baugh1942WASWAS11317.816112251,52413258.76.8138.57.14.982.5
Cecil IsbellCecil Isbell1942GBGB11477.624142682,02114654.57.5183.79.05.287.0
Bud SchwenkBud Schwenk1942CHCCHC11115.96272951,36012642.74.6123.62.09.225.5
Tommy ThompsonTommy Thompson1942PHIPHI11156.58162031,4109546.86.9128.23.97.950.3
Sammy BaughSammy Baugh1943WASWAS10456.423192391,75413355.67.3175.49.67.978.0
Sid LuckmanSid Luckman1943CHBCHB10557.328122022,19411054.510.9219.413.95.9107.5
Paul ChristmanPaul Christman1945CHCCHC897.55122191,1478940.65.2143.42.35.542.6
Sid LuckmanSid Luckman1945CHBCHB10277.914102171,72711753.98.0172.76.54.682.5
Paul ChristmanPaul Christman1946CHCCHC11256.513182291,65610043.77.2150.55.77.954.8
Sid LuckmanSid Luckman1946CHBCHB11336.917162291,82611048.08.0166.07.47.071.0
Bob WaterfieldBob Waterfield1946LALA1133717172511,74712750.67.0158.86.86.867.6
Sammy BaughSammy Baugh1947WASWAS12498.125153542,93821059.38.3244.87.14.292.0
Paul ChristmanPaul Christman1947CHCCHC12336.717223012,19113845.87.3182.65.67.359.0
Paul GovernaliPaul Governali1947TOT12336.117222521,77510842.97.0147.96.78.753.3
Jack JacobsJack Jacobs1947GBGB12316.816172421,61510844.66.7134.66.67.059.8
Sid LuckmanSid Luckman1947CHBCHB12475.724313232,71217654.58.4226.07.49.667.7
Tommy ThompsonTommy Thompson1947PHIPHI12316.616152011,68010652.78.4140.08.07.576.3
Bob WaterfieldBob Waterfield1947LALA12156.38182211,2109643.45.5100.83.68.139.2
Sammy BaughSammy Baugh1948WASWAS12436.722233152,59918558.78.3216.67.07.378.3
Charlie ConerlyCharlie Conerly1948NYGNYG1243822132992,17516254.27.3181.37.44.384.0
Fred EnkeFred Enke1948DETDET12216.511172211,32810045.26.0110.75.07.749.4
StatMuse has season-level data for intercepted passes, passing attempts, and passing yards going back to the 1932 season.

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