TJ Watt may have dodged a major bullet Saturday evening.

The star pass rusher for the Pittsburgh Steelers was injured in the second half of a win over the Baltimore Ravens. It was an ugly-looking blow to Watt’s left knee in particularly brutal field conditions, and he was visibly shaken up and battling pain.

Watt was fortunately able to walk to the locker room under his own power, and ESPN’s Adam Schefter reported Saturday night the defender was even arguing to get back into the game. Pittsburgh did not allow that to happen after the injury.

The good news is initial testing leads the Steelers to believe the injury is a grade 3 MCL sprain per Schefter. That’s believed to be “the best-case scenario” after watching Watt’s injury.

“The Steeler’s believe he’s got a grade 3 MCL sprain pending further testing that will occur tomorrow in Pittsburgh,” Schefter reported live on ESPN after the game. “TJ Watt was arguing to go back into the game, and the Defensive Player of the Year candidate was told he couldn’t go back in. He knew how important it was for him to be out there.

“The initial testing did, again, show a sprained MCL which seems like right now it could be the best-case scenario for the Pittsburgh Steelers.”

Before his injury, Watt delivered 2 sacks and 3 tackles for loss to cement his NFL-leading sack total with 19 on the season. It would be his 3rd season ever leading the league in sacks.