Matt Birk says he’s not retiring, yet

During Sunday’s Texans-Ravens pregame on CBS, Charley Casserly reported that Ravens center Matt Birk will retire after the 2011 season ends. That was news to Matt Birk. “No, I haven’t made that decision yet and I don’t know Charley Casserly,” Birk said after Sunday’s 20-13 win, according to Aaron Wilson of the Carroll County Times. …