Marc Weinreich
Tuesday September 24th, 2013

Cowboys defensive end Anthony Spencer will need microfracture knee surgery and is likely done for the season. (Tom Pennington/Getty Images) Anthony Spencer will need microfracture knee surgery, likely ending his season. (Tom Pennington/Getty Images)

Dallas Cowboys defensive end Anthony Spencer needs microfracture knee surgery and is likely done for the season, according to comments Cowboys owner Jerry Jones made Tuesday on his radio show.

Jones said he received the news Monday night.  Word of Spencer's impending surgery comes two months after the 29-year-old Pro Bowler underwent surgery on his left knee to address a bone bruise from May that had stemmed from a hyperextended knee. Loose cartilage from that surgery is affecting his movement, as is pain from bone-on-bone contact that lingers.

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Spencer played 34 snaps against the Kansas City Chiefs in Week 2. He participated in only one practice leading up to the Cowboys' 31-7 drubbing of the St. Louis Rams on Sunday and was declared inactive on game day. The seventh-year player was Dallas' second-leading pass rusher last season with 11 sacks and 27 pressures, earning him his first Pro Bowl selection. The 3-2 Cowboys will move forward without him when they take to the field Sunday afternoon in San Diego against the Chargers.

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