Brock Lesnar announced his unexpected retirement immediately following his loss to Alistair Overeem at UFC 141 tonight.

After eating several knees to the body and a perfectly placed liver kick from the reigning K-1 World Grand Prix champion, Lesnar covered up until referee Mario Yamasaki mercifully called the fight. Then moments later in his post-fight interview with Joe Rogan, Lesnar told the world it was his last fight in the Octagon.

“I’ve had a really difficult couple of years with my disease, and I’m going to officially say tonight is the last time,” Lesnar said. “This is the last time you’ll see me in the octagon.”

“I promised my wife and my kids if I won this fight, I would get a title shot, and that would be my last fight,” Lesnar said. “But if I lost tonight … you’ve been great.”

Brock didn’t show up to the post-fight press conference to elaborate on his announcement, but his opponent Alistair Overeem respectfully told reporters that he thinks it’s a shame if Lesnar really retires, explaining that it’s always a special event when Lesnar fights whether you love him or hate him. He believes Brock is improving and has a lot more to offer. Nevertheless, Lesnar seemed dead serious about hanging it up despite finally regaining his full health in recent months.

It’s unknown what Brock plans to do in his life after the UFC, but if those plans include the WWE, it sounds like the UFC will have a say in that decision. When asked about it at the post-fight press conference, an under-the-weather Dana White said, “I don’t know, we’ll figure it out.”

Image via Esther Lin for MMA Fighting