How AFC South QBs measure up

Let’s have a look at how the quarterbacks of the AFC South are faring in passer rating and QBR, shall we?

Passer rating maxes out at 158.3; QBR goes to 100. Here’s ESPN.com's QBR file.

For a game, QBR can be interpreted as a percentile, so a score of 80 means a QB’s performance was better than 80 percent of all QB games.

A reminder on Total QBR: It’s a quarterback rating that takes into account all of a quarterback’s significant contributions (passing, rushing, sacks, fumbles, penalties) to his team’s scoring and winning and summarizes them into one number on a 0-100 scale, where 50 is average. Since 2008, the team with the higher QBR has won 86 percent of the time.

Locker is back in the starting lineup for Tennessee. He's not played enough to qualify for the league leaders list in passer rating, but if his 90.8 was produced over a longer stretch of play, he'd be 12th in the NFL. That's an awfully strong position for a second-year guy in his first year as the starter.

The Titans' story for the rest of the season will be primarily about Locker's progress.