Vikings quarterback J.J. McCarthy has a torn meniscus in his right knee that will require surgery, derailing the rookie’s preseason progress and putting his status for the regular season in question.

Coach Kevin O’Connell announced the diagnosis Tuesday. McCarthy was hurt at some point Saturday during his exhibition game debut, when he went 11 for 17 for 188 yards, two touchdowns and one interception against the Raiders. McCarthy reported persistent soreness to the team when players reconvened Monday, and the 10th overall pick in the draft out of national champion Michigan was sent for further examination.

The Vikings hadn’t yet determined a date for the procedure or learned how long the 21-year-old will need to recover, meaning McCarthy could be back in about a month or, worst case, miss the entire season.

“We felt strongly about where he was at in his development process, so really you hurt for him just in the short term here because he had such a daily process, focus, all those things that I was really looking for in a young player at the position,” O’Connell said. “I think all of us will be staying optimistic that it hopefully is the shorter term.”

The rehabilitation for a full repair is much longer than if there’s just a partial tear and only a trim is needed, but the severity is typically not known until the procedure takes place.

“This is totally a medical decision. Certainly what’s best for the long-term health of J.J. McCarthy will be the priority,” O’Connell said.

Even if McCarthy’s injury is considered minor and he comes back on the shorter end of the wide range of timetables, this development was a big blow considering the promise he has shown and the plan to increase his turns with the first-team offense this week through the end of training camp.

Sam Darnold has been on top of the depth chart at quarterback all spring and summer and will now be solidified as the starter to open the season. Nick Mullens will be the clear backup, with Jaren Hall also on the roster entering his second year. O’Connell said the Vikings had no immediate plan to add another quarterback.

Browns rookie DT Mike Hall Jr. was arrested and charged with domestic violence after a fight with his fiancee. Police in Avon, Ohio, said Hall was booked and arraigned at Avon Lake Municipal Court and was released after posting bond. The Browns said they were aware of the incident involving the second-round pick from Ohio State. According to an incident report, the woman told police that Hall struck her with a baby bottle, dragged her along a porch and driveway and held a gun to her temple. Police said they seized two handguns.

Tennis: Alexei Popyrin of Australia, who turned pro in 2017, beat fifth-ranked Andrey Rublev of Russia 6-2, 6-4 to win the men’s singles title at the National Bank Open on Monday night in Toronto. It was the 25-year-old Popyrin’s first ATP 1000 level title. Also, sixth-ranked Jessica Pegula repeated as women’s champ with a 6-3, 2-6, 6-1 victory against Amanda Anisimova.