Durability of NFL's final 4 QBs vital to Super Bowl run (Yahoo Sports)

Sunday marks just the third time in the Super Bowl era that all four players taking the snap will be closer to their 40s than their teens. In a sport where the concept of longevity in its marquee position is fickle at best (see Cleveland Browns), the durability of the men that serve as the centerpieces for their team's title hopes is remarkable. The 31-year-old Ryan has missed just two starts in his nine seasons, the 33-year-old Rodgers nine since taking over for Brett Favre in 2008.