4) Blake Bortles: 11-34 record, 58.8 completion percentage, 69 touchdowns, 51 interceptions, 6.6 yards per attempt, 244.4 yards per game
The problem with Blake Bortles is his inability to keep the ball safe. Among the five quarterbacks on this list, Bortles has the highest interception percentage of attempts (3.0).
Yet he also throws more touchdowns as a percentage of attempts (4.0) than anybody else, except Mark Brunell (who he tied with).
That feast or famine play has hurt the Jaguars immensely. A quarterback who has the physical tools but simply can’t put it all together is a quarterback that can be a liability. Even as Bortles’ volume gives him some gaudy numbers (11,241 passing yards, third most in franchise history to go with his third-best 69 touchdowns after just three seasons), Bortles clearly has some issues. Tack on his fumbling issues and it gets worse.
Bortles already holds most franchise records for passing yards and touchdowns because of an impressive 2015 season and he is actually on pace to be the best quarterback for the franchise in raw numbers. The numbers just don’t tell the whole story in his case.