When you sort Pro-Football-Reference’s Play Index to find quarterbacks who threw at least 20 touchdown passes on 250 or fewer pass attempts, you’ll only find nine names. Of those nine seasons, the most recent was in 1963.
The quarterback in question for that 1963 season was Tom Flores, who more than 55 years later still has the greatest “second half” of a campaign in Raiders history.
Another thing I did on Play Index was look for the best TD:INT ratio seasons in the franchise’s history. Unsurprisingly, Derek Carr has the two best seasons in that regard, 2016 and 2019, respectively.