The
Oakland Raiders will be without quarterback
Derek Carr as he suffered a transverse process fracture in his back Sunday.
Raiders coach Jack Del Rio said Carr's injury "could be as short as two weeks -- it could be longer." Del Rio added that Carr could be out as many as six weeks.
Carr was injured on a sack late in the third quarter of Oakland's 16-10 loss at the
Denver Broncos on Sunday and did not return to the game.
After being twisted down awkwardly by
Adam Gotsis, Carr grabbed at his lower back and stayed prone on the ground. After several minutes, he was helped up and walked slowly off the field. After being examined in the blue pop-up tent on the Raiders' sideline, he walked back to the Raiders locker room.
Transverse processes are small projections on the vertebrae where soft tissue attaches, but they have no real role in load-bearing. In football, fractures to transverse processes are not uncommon when there is a direct hit, like a helmet or knee to the back, resulting in bruising and pain at the fracture site.
"Pain," Carr said Sunday, describing what he felt when he went down. "My back didn't feel too good."
Players can typically return to play as the pain allows, even as the bone continues to heal because of the low risk involved.
Panthers quarterback
Cam Newton suffered two transverse process fractures in a car accident in 2014 and missed one game. Cowboys quarterback Tony Romo also missed only one game after suffering two transverse process fractures in a game in 2014, the result of a knee in the back by Washington linebacker
Keenan Robinson.
With Carr out,
EJ Manuel will step in as the team's quarterback for Sunday's home game against the
Baltimore Ravens.
"I think the thing that we have seen in watching EJ Manuel is he's running the same offense that Derek Carr was running," Ravens coach John Harbaugh said Monday. "So, it's not like they have a different offense for Manuel. He's running the Oakland Raider offense, so we'll prepare for their offense, probably try to have an understanding of what he does well. They are both mobile; Derek Carr can really move, too. So, it's not like you're talking about two guys that aren't mobile. They're both mobile quarterbacks."
Information from ESPN's Paul Gutierrez and Jamison Hensley and ESPN.com injury analyst Stephania Bell was used in this report.