UFC legend and MMA analyst Chael Sonnen has come up with a bold take on Amanda Nunes' upset loss to Julianna Pena at UFC 269.

Despite having a dominant opening round, Amanda Nunes shockingly got stopped by her challenger Julianna Pena in the second round via rear-naked choke.

It can be recalled that Nunes even dropped Pena twice in the first round but things took a wild turn after the challenger rocked her in the second round which led to the UFC champ eventually getting submitted.

The sudden momentum shift prompted former UFC middleweight title contender and ESPN's Chael Sonnen to speculate that Nunes' defeat was “100 percent mental.”

“I got to tell you, man, that was a different fight. Like, we’ve seen upsets before,” Sonnen assessed via MMAJunkie. “This was totally different. Amanda flicked it. That was 100 percent mental beating, zero percent physical. That submission wasn’t there.”

“That was not a move. That was absolutely not a fighting technique,” he continued. “Julianna was in a terrible position, and Amanda quit. That’s OK. Everybody goes through that at some point. I only point that out not to kick her, I point that out because that’s what the surprise was. If she got kicked like Ronda did or knocked out like Mike did, we just chalk it up to a big upset and a glorious night. To mentally check out and hand it all back in only seven minutes, a bit of a surprise.”

Shortly after her first UFC title loss, Nunes admitted that she needs to pull herself together before going to a rematch with Pena.