Dak Prescott suffered a horrific season-ending injuring Sunday --snapping his ankle in the worst possible way, requiring emergency surgery.

The Dallas Cowboys QB was diagnosed with a compound fracture and dislocation of his right ankle. He was scheduled to undergo emergency surgery Sunday night.

It all went down during the 3rd quarter of the Dallas Cowboys vs. NY Giants game. Dak was tacked by Giants defensive back Logan Ryan and it was obvious he was badly hurt right away.

The Cowboys medical staff rushed over to evaluate him ... and once the camera got a close-up shot, it was clear he'd suffered a break, likely his ankle.

27-year-old Dak was squirming in pain. Medical personnel eventually got him on a cart and wheeled him off the field. The guy was in tears.

Andy Dalton replaced Dak at QB and led the Cowboys to a 37 to 34 victory. Afterward, Dak's close pal, Ezekiel Elliott, summed up the situation this way -- "It sucks."

He continued, "I know we won, it just sucks to lose Dak, our leader. And I was talking to the guys and it's going to take all of us. It's going to take all of us to fill that void that we're going to be missing from #4. Just gotta go out there and play for him."

Dak's brother posted an update from the hospital saying, "God is good, and he’ll be back STRONGER than ever."

"I F***ING guarante3 IT.  Let’s go @dak continue to walk by #FAITH & I’ll make sure you continue to #FIGHT."

Get well soon, man.

Logan Ryan also commented about the injury. It's obvious he feels awful about the situation, but injuries are part of the game.

"First and foremost, the worst thing that happened today was the Dak injury, it's bigger than football," Ryan said.

"I feel terrible, it was a routine football play ... You've got a guy, and I am in a similar position, he is scratching and clawing at one year on his deal to try and get rewarded, try to do the right thing, try to show up to work, try to lead his team, try to get a lucrative contract."