Left guard Robert Gallery and defensive lineman Jimmy Wilkerson both left Friday's game after suffering knee injuries.

Coach Pete Carroll described the injuries as sprains, and said each will undergo further tests on Saturday.

Gallery left the game in the first quarter, replaced by veteran Paul McQuistan. Wilkerson's injury occurred at the end of the first half.

"We'll know more when we see the MRIs tomorrow," Carroll said, "but both of them, they're significant enough where we've got to be concerned about next week for these guys. We don't know."

Middle linebacker David Hawthorne missed the last two exhibition games with a knee injury, but Carroll said that all indications are he will be ready to play when the regular-season begins. Carroll also said left tackle Russell Okung and running back Marshawn Lynch are projected to be 100 percent.

"They have to make it through the week and show they can take the workload," Carroll said.

Receiver Sidney Rice's status sounds a little less certain. He left Tuesday's practice after aggravating a shoulder injury, and while he worked out on the field before the game, his availability for the Week 1 opener isn't a sure thing.

"Sidney's shoulder is still sore," Carroll said. "He has made a lot of improvement in the last couple of days already so we'll be watching that day to day."