Now in his sixth NFL season, Joe Flacco has yet to miss a start. That durability is one of his strengths as a quarterback, one of the reasons the Ravens have made the playoffs the past five seasons.

Injuries have forced many NFL teams to turn to their backup quarterback. Josh McCown will lead the Bears against the Ravens on Sunday, as injured Jay Cutler (ankle sprain) watches from the Chicago sideline. McCown has played well subbing for Cutler this season, but the Bears didn’t plan on McCown starting pivotal games in November. Now with Cutler injured and McCown playing well in coach Marc Trestman's system, more people are asking whether the Bears should reconsider signing Cutler to a salary-cap eating deal when his contract expires after the season.

Flacco already has his huge long-term deal, but this year has been a struggle for him with 12 TD passes, 11 interceptions, and a quarterback rating of 77.3. He has been hit often this season, much more than last season when the Ravens won the Super Bowl. Teams are blitzing the Ravens more, knowing they have offensive line issues, knowing they don’t run the football well, and knowing Flacco misses some of last season’s favorite targets like Anquan Boldin and Dennis Pitta.