EJ Manuel at bottom of QBR chart

As bad as last week was for EJ Manuel, it got worse Sunday.

Manuel posted a Total QBR of 7.4 in the Buffalo Bills' 23-17 loss to the Houston Texans, the NFL's lowest QBR in Week 4, prior to Monday night's game.

It's the second consecutive week that Manuel has finished at the bottom of the NFL's charts in Total QBR, an advanced statistic developed by ESPN that uses situational and historical data to evaluate quarterbacks.

It's also the first time that an NFL quarterback has recorded a single-digit Total QBR in back-to-back full games since Kansas City's Brady Quinn did so in the final two weeks of the 2012 season.

Manuel now ranks 35th out of 36 qualified NFL quarterbacks in Total QBR. Only Jacksonville's Chad Henne, who lost his starting job last week, has a lower Total QBR than Manuel, whose season average is a 19.8 out of a possible 100.