Okung said later that he would be fine, but coach Pete Carroll held out the possibility that Okung could miss some time saying, “I’m disappointed for him because those can last a little bit.’’

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The Seahawks’ offensive line delivered a few more answers during a 30-13 victory over Cleveland on Sunday, though one new question emerged — the health of left tackle Russell Okung.

Okung left the game late in the third quarter because of what coach Pete Carroll called “somewhat of a calf strain.”

Okung said later that he would be fine, but Carroll held out the possibility that Okung could miss some time saying, “I’m disappointed for him because those can last a little bit.”

If Okung were to miss the Seahawks’ next game Sunday against the Rams, it would be just the second time this season they would have to make a change on the line due to injury.

SEAHAWKS 30, BROWNS 13

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The only other time the Seahawks saw a player go down with an injury came when center Patrick Lewis missed two games after being hurt against Carolina. Since Lewis got healthy he regained the starting job from Nowak, the Seahawks have started the same offensive line the past six games. The past five of those were wins.

The maturation of the offensive line has been a key to that winning streak, as evidenced again by its play against the Browns. The Seahawks rushed for 182 yards despite the fact that the three running backs who had the most carries Sunday had a total of 18 carries this season entering the game.

“It shows it doesn’t matter who goes back there,’’ right tackle Garry Gilliam said. “As long as they hit their spot and go downhill, we are good.”

True, the Browns began the day as one of the NFL’s worst run defenses. Still, the Seahawks averaged 5.1 yards per carry. Even without Marshawn Lynch and Thomas Rawls, the run game kept rolling.

“That shows you how good the offensive line is,” receiver Doug Baldwin said.

The resurgence of the offensive line no longer feels that way anymore. The Seahawks haven’t allowed more than two sacks in any of the past seven games after allowing four sacks in six of their first seven games. The Seahawks entered Sunday first in rushing yards per game, second in total rushing yards and seventh in yards per carry.

“They’re savages,” tight end Luke Willson said.

But Sunday was an especially impressive performance from the offensive line, even if it came against the 3-11 Browns. Quarterback Russell Wilson was sacked twice and said after the game that one of those was his fault.

Okung was replaced by Alvin Bailey, and he likely would start against the Rams if Okung can’t play.

McCray steps in for Chancellor

Strong safety Kam Chancellor was inactive due to a pelvis injury suffered in the win at Baltimore last week.

Kelcie McCray started in his place and had a team-high eight tackles.

“He stepped in and did his job,” free safety Earl Thomas said. “He made some plays, he shot some gaps. I feel like we didn’t really miss a beat.”

It was the first career start for McCray, a fourth-year player acquired from Kansas City for a fifth-round draft pick before the season.

“I really wasn’t nervous,” he said. “I was anxious to get the game going and get a couple hits in. But I had a lot of fun playing out there with those guys.’’

Carroll said he was unsure of Chancellor’s status going forward.

“He couldn’t make it,” Carroll said of Chancellor, who did not practice all week. “We’ll see next week and see how we go.”

Cornerback shuffle

The Seahawks also had some new looks at cornerback with DeShawn Shead leaving the game during the first series because of a sprained ankle suffered last week.

“We got him out there a little bit and just had a chance to save him (for next week),” Carroll said. “It was miraculous that he was back on the field this week, and so we were able to get him through. He should be fine for next week.’’

To replace him, Jeremy Lane moved outside from the nickel spot and Marcus Burley stepped in for Lane.

It was the first significant action outside for Lane since he returned from a torn knee ligament and broken wrist in the Super Bowl.

“He did a great job,’’ Carroll said.

Burley, meanwhile, had a sack and an interception.

Notes

• Thomas said Cleveland’s first drive,when the Browns went 80 yards in 15 plays,was nothing to worry about. “You’re just trying to figure out what they are trying to do,’’ Thomas said. “It was just quick screens that were going for longer gains. But that won’t beat you.’’

• Carroll said Okung’s injury was the only new injury the team suffered.

• The playoffs will be a new experience for two veteran Seahawks in their first year with the team — 34-year-old running back Fred Jackson and defensive tackle Ahtyba Rubin. Rubin began his career with the Browns in 2008 and clinched a playoff berth against his old team. “It’s a great feeling,’’ Rubin said. “I’ve never won more than eight games, and this is a great feeling.’’