Total QBR is a quarterback rating that takes into account all of a quarterback's contributions (passing, rushing, sacks, fumbles, penalties) to his team's scoring and winning and summarizes them into one number on a 0-100 scale, on which 50 is average.
For a season, a Total QBR of 65 or better is roughly Pro Bowl-level, and a rating of 75-plus is MVP-level. For more about the methodology and statistics behind Total QBR, see here.
Aaron Rodgers remains atop the season-long Total QBR rankings, posting a 92.4 Total QBR in Week 13. Rodgers has reached a Total QBR of 80-plus in 10 of his 12 games and 90-plus in six of the 12.
Philip Rivers posted a Total QBR of 98.1 Monday night, his best single-game rating since the start of the 2008 season, and jumped to 16th place on the season. Blaine Gabbert posted a career-high 47.1 Total QBR, but it was not enough for him to get out of last place on the season.
Below is the full breakdown of Total QBR and its component statistics for the 34 NFL QBs on pace for 250 action plays this season.