"He was here," UFC president Dana White said at the post fight Press Conference. "I think that says it all."
"He texted me and said, 'I want to come to the fight, but keep it quiet because I don't want to tell anybody,'" White said. "He said, 'What are you doing tonight? ... I want to talk face to face.'
"You never know with him. He might want to come back. He might just want to hang out."
The 34-year-old Lesnar — who won the heavyweight title over Randy Couture back at UFC 91 after just two fights in the UFC — had been battling a second round with diverticulitis (the disease cost him 12 inches of his colon in 2011) before retiring from the sport for good in December.
Perhaps Lesnar just had interest in Junior Dos Santos and Frank Mir's championship tilt since he had history with both fighters. The one-time Minnesota Viking and former NCAA Division I national wrestling champion split a pair of fights with Mir and was scheduled to fight Dos Santos after their season as coaches on "The Ultimate Fighter 13."
But there's always the chance that Lesnar (5-3 MMA record, 4-3 UFC) wants back in the octagon.
"I still think Brock Lesnar is one of the top guys in the heavyweight division," White said. "Is he in the top five? I don't know. We'll see."
"I think people get it now with Brock," White said. "Brock is a huge WWE star and huge UFC star. He's accomplished at both. ... He went back to the WWE. There's no secret. I think people get it. There's nothing fake going on here. It's real. They get it."