Posted by ESPN.com staff
After surveying your team's backup quarterbacking situation, are you skeptical about the franchise’s chances if the starting signal-caller is sidelined? No matter how discouraging the depth chart appears to be, keep the faith. Some of the NFL's best quarterbacking jobs were supplied by men who were second-stringers pushed into the spotlight by fate. ESPN Stats & Information compiled our top 10 single-season performances by backup quarterbacks.