Chris Simms
Nobody will pretend that Simms was the greatest NFL quarterback. But the former quarterback had a lot of heart as he demonstrated in one game against the Panthers. Simms took a lot of hard hits during this clash and it left him with a ruptured spleen. He also damaged multiple ribs and which forced him off the field.

But he made the brave decision to return to the action despite his compromised state. This was remarkable because he was in serious pain and should have been in the hospital. After the game, he underwent an operation and the surgeon removed his spleen. It was crazy, but this is the NFL (via CBS News).