Mike Davis was two quarters into an impressive debut with the Seattle Seahawks when he suffered a groin strain that ended his night early.

After gaining 59 yards on eight touches -- 41 coming on a pair of screen passes that each aided field-goal drives -- Davis watched the rest of Seattle's 34-31 loss to the Atlanta Falcons from the sideline. He had a towel over his head and an ice pack wrapped around his upper right thigh.

Coach Pete Carroll told 710 ESPN Seattle on Tuesday that the extent of the strain won't be known until Davis gets an MRI later in the day, but he conceded that it's probably severe enough to sideline him this week.

"It's unlikely that he could jump right back in," Carroll said.

Carroll also said right guard Oday Aboushi is out this week after dislocating his shoulder in the fourth quarter vs. Atlanta. While he won't be available for Sunday's game against the San Francisco 49ers, Seattle could have left guard Luke Joeckel back. He's missed the last five games while recovering from arthroscopic knee surgery.

Joeckel has yet to start practicing, but Carroll sounded hopeful he could be back in the starting lineup Sunday.

"There's a really good chance," Carroll said. "Luke wants to play. That's important and he's ready to go. That could likely happen."

Rookie second-round pick Ethan Pocic has been filling in at left guard and has played well enough to merit strong consideration to remain in the starting lineup whenever Joeckel returns. Offensive line coach Tom Cable said last week that would likely be at right guard, so Aboushi's injury may be coinciding with what was an inevitable shift in the starting lineup.

If Joeckel doesn't make it back this week, Mark Glowinski would likely play right guard. He started the first two games of the season there before he was benched in favor of Aboushi.

Carroll had no update on rookie cornerback Shaquill Griffin, who left Monday night's game after two plays because of a concussion.

Asked if there's any update on strong safety Kam Chancellor, who is reportedly expected to miss the rest of the season due to a neck injury, Carroll said the team will likely have one early this week.

Davis started for Seattle on Monday night ahead of Eddie Lacy and Thomas Rawls, who was inactive as a healthy scratch. Carroll said the Seahawks wanted to ease Lacy back in as he was returning from a strained groin that had sidelined him in Week 10. He carried three times for two yards while J.D. McKissic gained 30 yards on seven attempts.

Carroll said if Davis can't go this week, "Thomas jumps right back in and here we go again with Thomas. Eddie got a good week and we didn't want to overdo it. He just barely made it back with his groin, so now we'll see."

Davis said postgame that he'll be "rehabbing like crazy" to make it back in time to face the 49ers, the team that drafted him in 2015 and cut him over the offseason. He made it clear that he's extra motivated to do so.

"Man, if I had a broken leg, to play against San Fran, I would still try to play," Davis said.

But his injury means the revolving door that has been Seattle's backfield will likely take another turn this week.

Rookie Chris Carson began the season as the starter but is on injured reserve after hurting his ankle in Week 4. Lacy and Rawls shared carries during the next three weeks before the Seahawks decided to give Lacy a shot to take over, but he got hurt in his first game as the starter. Third-down back C.J. Prosise then suffered another ankle sprain that landed him on IR last week, opening up a spot for Davis to be promoted from the practice squad.

"He looked good in the game," Carroll said of Davis. "He was aggressive and decisive and can catch the football and did some really good things and unfortunately here goes another soft tissue thing out of nowhere. He's been practicing his buns off for months here with us and looked great and in great shape. He's probably in better shape than anybody that we have, so for that to happen, it's just unfortunate."