Giants quarterback Daniel Jones suffered a torn ACL in his right knee in the second quarter of Sunday's 30-6 loss at the Las Vegas Raiders, which was his first game back from a neck issue that sidelined him the past three weeks.
Giants head coach Brian Daboll confirmed the team's fears on Monday morning, telling reporters that his season was over.
Jones initially "declined to answer questions" while walking through the locker room and limping without crutches, ESPN had reported.
"Tough," Daboll said on Sunday evening. "You never want your guys to go down. He's worked really hard to get back, and it's unfortunate."
On a second-and-17 snap from the Giants' 46-yard line -- the first play of the second quarter -- during New York's third offensive possession, Jones' right knee appeared to give out before Malcolm Koonce for a 10-yard loss.
The previous play, a first-and-10 snap from the Raiders' 47-yard line, Jones' same knee seemingly buckled without contact prior to Maxx Crosby's 7-yard sack.