Tom Brady sent home after slicing thumb open before Bears game

Patriots quarterback Tom Brady was supposed to make his preseason debut on Thursday night. However, that debut never happened, because Brady apparently injured himself in the hours leading up to the game.

According to CSNNE.com, Brady sliced open his right thumb with a pair of scissors while working on his cleats and was sent home.

It's not clear how serious the injury is, but the Patriots clearly didn't want to take any chances with the 39-year-old quarterback. After Brady suffered the injury, he changed into street clothes and was seen walking to the player's parking lot at Gillette Stadium.

Brady's agent, Don Yee, didn't reveal how severity of the injury, but he did confirm to CBS Sports NFL Insider Jason La Canfora that an "accident occurred."

"Tom will be OK in time," Yee added.

With Brady out, Jimmy Garappolo started for New England against Chicago.

Brady's playing status became a giant mystery in the 60 minutes leading up to the game. During a pregame interview with 98.5 The Sports Hub, a CBS Sports Radio station, in Boston, Belichick had said that Brady was going to play. Belichick's comments corroborated reports from earlier Thursday that suggested that Brady would likely play one series against the Bears.

Questions about Brady's status began to arise about an hour before the game when the quarterback was nowhere to be found during warmups. The mystery deepened when Patriots team president Jonathan Kraft went on radio and said that he "didn't believe" that Brady was going to play.

At that point, most people thought Belichick was playing some sort of mind game on the Bears. As it turns out though, it's way more serious for the Patriots: Brady has a thumb injury.

The injury now means that Brady won't play his first game at Gillette Stadium until October.

The game against the Bears will be the final home game of the preseason for the Patriots. If you factor that in with Brady's four-game suspension, it means that the quarterback won't get to play another home game until a Week 6 game against the Bengals on Oct. 16.

The only good news for Brady is that if his thumb injury needs stitches, he'll have plenty of time to heal due to his suspension.

CBS Sports Writer

John Breech has been at CBS Sports since July 2011 and currently spends most of his time writing about the NFL. He's believed to be one of only three people in the world who thinks that Andy Dalton will... Full Bio

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