Dallas defensive end Randy Gregory is active for the first time this season against Detroit on Monday night after serving a 14-game suspension for violating the NFL's substance abuse policy. Gregory was originally suspended four games before a 10-game ban was added during the season for another violation by the second-year player who slid to the second round of the 2015 draft in part because of concerns over marijuana use. Running back Theo Riddick is out for the third straight game because of a wrist injury. More...