It's become one of the most disturbing annual rites of passage for NFL teams. Every year, NFL teams lose valuable players off their rosters due to injuries suffered in the offseason.
These injuries come in a variety of forms, but the season ending types are usually a torn anterior cruciate ligament (ACL) or an Achilles tendon rupture.
Sometimes the injuries come in regular workouts during organized team activities (OTA’s), mini-camps, or training camp.
However, some injuries also occur during a casual activity or under extraordinary circumstances.
In the 2009 season, one such injury that stood out was the ACL tear of Philadelphia Eagles middle linebacker Stewart Bradley.
The former star of the University of Nebraska was participating in the Eagles Flight Night, a somewhat glorified night practice in front of fans at Lincoln Financial Field instead of the team's usual practice facility at Lehigh University.
Losing Bradley on August 2 gave the Birds little time to find a replacement, if one could have even been found for the ascending star.
Philadelphia tried myriad of "stopgaps" including bringing Jeremiah Trotter off the radio airwaves and out of retirement. Nothing worked and the Eagles performance in 2009 was clearly worse than it would have been with Bradley in the middle.
In 2010, several more players have already gone down with an injury and the following slides represent an attempt to rank these injuries in order of the least severe impact to the most.