Paul Posluszny left the game the same way he played — with the utmost class.
The veteran middle linebacker retired Tuesday after 11 NFL seasons with Buffalo and Jacksonville, calling it quits because he can "no longer compete at a level that I find acceptable."
Posluszny delivered the news in a heartfelt letter that thanked family members, former coaches at every level and teammates past and present.
"With much sadness but without regret, I realize that I am no longer able to adhere to the unwavering standard of excellence that professional football demands," Posluszny wrote. "I say this with a heavy heart: I am retiring from the NFL. I...