5:27pm: Prescott has undergone the thumb surgery, according to Michael Gehlken of the Dallas Morning News (on Twitter). The operation was successful, but the wait begins. Rather than acquire another quarterback, the Cowboys are sticking with Rush. The former UDFA has been Dallas’ primary backup since Tony Romo‘s 2017 retirement. Prescott is expected to attend the now-Rush-centered position meetings as he rehabs.
8:51am: The Cowboys suffered a significant loss on the scoreboard and the depth chart last night, as quarterback Dak Prescott left the game with a thumb injury. He will undergo surgery to address the issue, which ESPN’s Todd Archer reports is expected to keep him sidelined for six to eight weeks. As a result, Archer adds, Prescott will likely be placed on IR. 
During postgame availability, head coach Mike McCarthy confirmed that the injury is “significant.” Prescott, meanwhile, offered a somewhat encouraging update by saying that the fracture in his throwing hand “was much cleaner than it could have been.”
Nevertheless, the injury is a crushing blow for the Cowboys, whose offense already faced plenty of questions heading into last night. Left tackle Tyron Smith will be sidelined until at least December due to a torn hamstring, and the injuries to wideouts Michael Gallup and James Washington leave the team with few established pass-catchers. Overcoming those absences will be significantly more difficult without Prescott, who will be on the shelf for the second time in the past three seasons after an injury-free start to his career.
The two-time Pro Bowler was limited to five games by an ankle injury in 2020, but still landed a $40MM-per-year deal the following offseason. He played in 16 games last year, posting an 11-5 record while throwing for 4,449 yards and 37 touchdowns. Expectations were high for he and the team again in 2022, but things have changed dramatically in the span of one night.
“It’s very disappointing,” Prescott said, via Bobby Kownack of NFL.com. “But injuries happen. You can’t necessarily control it. It’s just unfortunate… but I’ll do what I’ve always done any time adversity comes. Take it on headfirst, give it my best, and I’m sure I’ll come out of this thing better.”
Cooper Rush will now take over as Dallas’ starting QB; the former UDFA had made 11 appearances with the Cowboys before filling in for Prescott last night (but only one start). He, along with Will Grier, were temporarily let go of during roster cutdowns, but the team fully intended to keep both of them in the fold. Grier will likely be signed to the active roster from the practice squad, unless the Cowboys search for outside options to replace their signal-caller for the intermediate future.
