Player Bio
| HT/WT: 6-2, 234 lbs |
| Birthplace: Deer Park, IL |
| Age: 26 |
| School: Wisconsin |
| Experience: 5 |
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Top Jack Sanborn News
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Bears' Jack Sanborn: Back with Bears
Chicago signed Sanborn to the active roster Tuesday.
Sanborn signed a one-year deal to return to Chicago in mid-March but was released Sunday. However, the Bears had a quick change of heart and re-signed the veteran linebacker Tuesday. Sanborn will likely fill a rotational role on defense while also contributing on special teams.
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Bears' Jack Sanborn: Returning to Chicago
The Bears signed Sanborn to a one-year deal on Wednesday, Courtney Cronin of ESPN reports
Sanborn is returning to Chicago, where he spent the first three years of his career before signing with the Cowboys for the 2025 campaign. The 25-year-old has seemingly recovered from the groin injury that landed him on Dallas' injured reserve last November and will likely serve in a depth role with the Bears during the upcoming campaign.
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Cowboys' Jack Sanborn: Ends campaign on IR
Sanborn (groin) played in six games in 2025 before ending the season on injured reserve. He totaled 34 tackles and one defensed pass when healthy.
Sanborn joined the Cowboys on a one-year deal last March and began the campaign as a starter, logging 32 tackles over his first four games. However, he suffered a concussion in Week 5 against the Jets, missed Week 6 against Carolina, and then was limited to special teams in Week 7 against Washington before hurting his groin and landing on IR. Sanborn was never able to make it back on the field, nor was he designated to return. He's slated to be a free agent.
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Cowboys' Jack Sanborn: Shifts to IR
Sanborn (groin) was placed on the injured reserve list Monday.
Sanborn had already been ruled out for Monday night's matchup against the Cardinals, but he'll now be forced to miss Dallas' next four games after being placed on IR. The Wisconsin product appeared in six games prior to injury, recording 34 total tackles and one pass defended. Expect Shemar James to operate as the Cowboys' top middle linebacker while Sanborn is sidelined.
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Cowboys' Jack Sanborn: Missing second straight
Sanborn (groin) has been ruled ahead of Monday's game against the Cardinals, Todd Archer of ESPN.com reports.
Sanborn will be in for his second consecutive absence after being unable to practice in any capacity throughout the week. He was supplanted as a starting linebacker in Week 5, though he still contributes some defensive snaps as well as on special teams.
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Cowboys' Jack Sanborn: Still working through groin injury
Sanborn (groin) did not participate in Thursday's practice, Jon Machota of The Athletic reports.
Sanborn was unable to play against the Broncos this past Sunday due to a groin injury, which he appeared to pick up late in the week or in pregame warmups. The injury prevented him from practicing Thursday, and he'll need to return to practice in at least a limited capacity over the next two days in order to have a chance at playing against Arizona on Monday.
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Cowboys' Jack Sanborn: Won't play due to groin injury
Sanborn was added to the Cowboys' injury report due to a groin injury, and he has been ruled out for Sunday's game against the Broncos.
It's unclear when Sanborn sustained the injury, as he was not listed on the Cowboys' injury report during Week 8 prep. However, the injury is severe enough for the fourth-year linebacker to not suit up against Denver. With Sanborn set to be inactive and DeMarvion Overshown (knee) still on the reserve/PUP list, Damone Clark will serve as the Cowboys' lone reserve linebacker on the active roster behind Marist Liufau, Shemar James and Kenneth Murray.
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Cowboys' Jack Sanborn: Loses role
Sanborn did not record a tackle in Sunday's 44-22 win over the Commanders.
Sanborn returned from a one-game absence caused by a concussion but he did not regain his role as a starter in the middle of the defense. Instead, Shemar James and Kenneth Murray served as the Cowboys' primary linebackers. Sanborn did not record a defensive snap but he did play six on special teams.
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Cowboys' Jack Sanborn: Cleared to play vs. Washington
Sanborn (concussion) does not have an injury designation heading into Sunday's game against the Commanders, Jon Machota of The Athletic reports.
Sanborn was a full participant in the last two practices of the week. The 25-year-old linebacker has cleared the league's five-step concussion protocol ahead of Sunday's NFC East bout, and his return will mean less snaps on defense for Marist Liufau. Sanborn logged 34 tackles (16 solo) and one pass defense through the first five games of the season prior to his injury.
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Cowboys' Jack Sanborn: Full practice Thursday
Sanborn (concussion) was a full participant at practice Thursday, Todd Archer of ESPN.com reports.
Sanborn has now progressed from a limited participant Wednesday to a full go Thursday, but it's unclear if he's cleared concussion protocol quite yet. The linebacker will look to log another full practice Friday ahead of Sunday's matchup with the Commanders.
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Cowboys' Jack Sanborn: Returns to limited practice
Sanborn (concussion) practiced in a limited fashion Wednesday, Mike Garafolo of NFL Network reports.
This is a step in a positive direction for Sanborn, who didn't practice at all last week and missed this past Sunday's game against Carolina. However, the fourth-year linebacker will need to clear concussion protocol in order to be eligible to suit up in Week 7 against Washington. Sanborn was hurt in the first half of the game against the Jets on Sunday, Oct. 5.
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Cowboys' Jack Sanborn: Won't play against Carolina
Sanborn (concussion) has been ruled out for Sunday's game against the Panthers, Clarence Hill Jr. of AllDLLS.com reports.
Sanborn was unable to practice this past week and will remain in the league's concussion protocol. His next opportunity to play will be Week 7 against the Commanders on Sunday, Oct. 19, though he'll have to return to practice in at least a limited capacity next week to have a chance at returning. Shemar James is the top candidate to start at middle linebacker in Sanborn's absence.
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