Morrow (ankle) could be sidelined into the regular season, Bill Williamson of RaidersSnakepit.com reports.

EDGE Analysis

Morrow's ankle injury is apparently worse than originally expected. If he is indeed not ready for the season opener, Nick Kwiatkoski would be the likely candidate to replace him at middle linebacker. Durability has not been an issue for the 26-year-old in his career, as he has missed just two games during his four years with the Raiders.