TYRANN MATHIEU SIGNS CONTRACT EXTENSION! ROLANDO MCCLAIN & PURPLE DRANK! TRENT RICHARDSON CUT! Matthew Emmons-USA TODAY Sports First, there was fat Tony Romo. Now, his backup, Kellen Moore, has a broken ankle. The Cowboys" backup QB situation just got more confusing. The Dallas Cowboys suffered bad news today when backup quarterback Kellen Moore suffered a broken ankle.Enter Nick Foles. Dallas...