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OXNARD, Calif. -- Cowboys defensive end Anthony Spencer's time in Oxnard could be done.

He'll undergo surgery on his left knee this week, and could miss as much as a month.

"Two-to-four weeks is what I've been told," said Cowboys Head Coach Jason Garrett.

Spencer suffered a bone bruise the final week of organized team activities, and the injury flared up again during his conditioning run Saturday in Oxnard.

"We don't think his knee situation is bad at all," Garrett said. "It just doesn't feel quite right to him. And we're going to do a procedure on him in the next few days that hopefully gets him right."

Since initially hurting the knee, the Cowboys were banking on rest and rehab to help Spencer mend.

"No one's in any kind of hurry to get these guys on an operating room table -- that's not how you want to work," Garrett said. "You want to give them an opportunity to rehab and get things right, and if you can't do that, you make your next best decision."

E-mail jtrahan@wfaa.com

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