It is the statistic that separates the good quarterbacks from the great ones.
Forget about how many throws he completes, how many yards he compiles, how many touchdowns he produces. It's what happens when the game is on the line that is the true test of how valuable he is.
Only the best of the best reside at the top of the list of fourth-quarter comebacks: Peyton Manning with 43. Tom Brady at 37. Drew Brees with 36. Johnny Unitas at 34. Dan Marino at 33. Ben Roethlisberger at 32. John Elway with 31. Hall of Famers or soon-to-be Hall of Famers one and all.
