Coach Jason Garrett hinted that Spencer's absence Friday had something to do with the Cowboys practicing on a wet field in the rain,Jerseys From China.
Backup linebacker Ernie Sims will miss his second straight game with a groin injury.
"He feels like he's getting a little bit better but he didn't do much today," Garrett said.
It's the second time in three games dating to last season that Bryant has battled back issues. He was in a wheelchair and spent a night in the hospital after last season's finale in Washington,Cheap Soccer Jerseys Authentic. He says the latest injury is "nothing that I feel like will affect me in the long run."
Spencer wasn't in the locker room when it was opener to reporters Friday. He said earlier in the week he was experiencing soreness.

Bryant missed the first practice of the week but progressed to full participation by Friday and declared himself ready to "roll" Sunday against the Rams,Brent Seabrook Jersey. He said he had spasms after getting hit in the back in the first quarter last weekend against Kansas City.
Bryant is listed as probable along with quarterback Tony Romo (ribs),Swingman Nike NBA Jerseys, cornerback Morris Claiborne (shoulder) and defensive end DeMarcus Ware (neck).
Spencer played for the first time this season against the Chiefs but missed two of three practices during the week. He had arthroscopic knee surgery July 25 and missed all of training camp and the preseason.
IRVING, Texas (AP) — Dallas Cowboys receiver Dez Bryant says he will play against St. Louis after battling back spasms, and defensive end Anthony Spencer was questionable Friday because of his troublesome left knee.
"No concern,Wholesale Nike NFL Jerseys," said Bryant,NFL Jerseys Supply, who played the last three games last season with a broken finger. "If you take a blow to the back the way I took a blow to the back, you're probably going to feel the same way I feel."