Cowboys DE Gregory active vs Lions after 14-game suspension

ARLINGTON, Texas (AP) 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.

The Lions are without cornerback Darius Slay because of a hamstring injury that also sidelined him for two games in November. Running back Theo Riddick is out for the third straight game because of a wrist injury.

Detroit center Travis Swanson misses his third straight game with a concussion.

Starting Dallas defensive end Tyrone Crawford is out for the first time this season with shoulder and hamstring injuries.

---

For more NFL coverage: www.pro32.ap.org and http://twitter.com/AP-NFL

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.