NFL Week 15 grades: Cowboys hit with an 'F' for blowout loss to Bills, 49ers earn an 'A' for beating Cardinals

Here are the Week 15 grades for every NFL team

Welcome to the Week 15 grades!

This was a good week for quarterbacks who are trying to revive their career. In Cleveland, the Browns beat the Bears 20-17 after Joe Flacco mustered some fourth-quarter magic out of nowhere. With the Browns trailing 17-7 in the fourth, Flacco responded by throwing for 212 yards in the FOURTH QUARTER alone.

If you're wondering how impressive that is: It's the most by any Browns QB in any quarter since at least 1991. AND it's the most by any player in the fourth quarter in any game this season.