the playoffs. Earlier this season Cutler suffered an injury to his ribs after a vicious (but legal) hit from Ndamukong Suh. However, the injury only knocked him out for all of one play. Despite the criticism, Cutler has proven himself to be very tough, and his knee injury was shown to be more serious than previously believed. But there is the possibility that for the third straight year, an injury to Jay Cutler derails a promising season for the Chicago Bears. Matthew Stafford Andy King/Getty Images Matthew Stafford is another quarterback who's been injury prone since coming into the league. The Detroit Lions' No. 1 pick in 2009, Stafford started 10 games before being placed on IR in Week 16 with injuries to his knee and shoulder. However, his biggest injury came the following season. Since then, Stafford has made sporadic appearances on the injury list, but usually with terms like "probable" or "questionable" next to his name. His shoulder appears to be fine right now, and he has played well since his last big injury. After being drafted No. 1 overall by the Rams in 2010, Bradford put up an rookie impressive season that had St. Louis fans excited for the future.  However, he missed six games last year with a high ankle sprain, and the Rams finished with a 2-14 record. Bradford has remained healthy in 2012, but his history makes Rams fans wince every time he's hit hard in the pocket. Ben Roethlisberger Justin K. Aller/Getty Images