FRISCO, Texas _ The Cowboys will lose inside linebacker Sean Lee for six weeks after he underwent surgery for a sports hernia, a source said Wednesday.
Lee was already on injured reserve and expected to miss at least three weeks, but his health didn't improve and now he'll be lost for an extended period.
Lee suffered the injury during the conditioning phase of training camp. It's just another injury for Lee, whose career has been nearly defined by injuries. He's missed time due to knee, hamstring, toe and neck injuries.
Last year, Lee played all 16 games for the first time in his NFL career.
In the offseason, Lee signed a one-year, $4.5 million contract to return for an 11th pro season with the only franchise he has played for.
Lee joins Leighton Vander Esch as two main linebackers who will be out for close to two months of the season.
Vander Esch will miss six-to-eight weeks with a broken collarbone suffered in the Week 1 loss to the Los Angeles Rams.
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