CarAV: 128
Contrary to what the common armchair quarterback would tell you, Philip Rivers has proven himself more valuable to the Chargers than Eli and Big Ben have over the course of their respective careers. Despite the absence of a Super Bowl ring, Rivers is a six-time Pro Bowler and is among the top tier of NFL quarterbacks.
He's never played anywhere but San Diego, totaling 45,833 yards and 314 touchdowns in 176 starts. In those starts, Rivers is 97-79 with a rating of 94.7, and his play has translated to five playoff runs and four postseason wins for the franchise.
As for his best season, that took place in 2009 when the 28-year-old earned an AV of 19. In his fourth year as the Chargers' starter, the team finished 13-3 behind Rivers' 4,254 yards and 28 scores.