The NFL revealed that Monday night’s Bears-Vikings game had the most concussions in a single contest since the injury was invented in 2009.

“We believe at least 15 players are now exhibiting concussion-like symptoms after last night’s game on the rock-hard, virtually unplayable turf,” said NFL commissioner Roger Goodell. “That would be the most in a game since concussions were invented last year, which is the first time we heard of such a thing.”

Despite player concerns, the NFL endorsed the Vikings’ decision to hold the game on a parking lot-like field and is now facing backlash. Goodell said he chooses to focus on the bright side.

“We lost a lot of good men out there,” said Goodell. “But we also lost Brett Favre and if that means he’s finally out of my hair, I consider it worth it.”