Luke Rockhold was knocked out by Michael Bisping in the main event at UFC 199 last Saturday.

He lost his title in the cage, and his cool afterward at the post-fight news conference. Bisping can get under peoples’ skin with his trash-talking skills. Usually, that’s the entertaining pre-fight chatter designed to sell pay-per-views and maybe alter the psyche of the opponent. This time, however, it came after the fight.

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“Verbal warfare and fight hype is one thing, but that moment following the outcome of a fight is where a man’s true character shines,” Rockhold wrote on his Instagram account on Tuesday. “After our first fight I picked him up off the canvas and gave him his due respect. Bisping went out of his way to come across the cage not to shake my hand like a man but to further mock the situation. I felt it was a classless move on his part. Thus the reason I was so [expletive] off at the press conference. I don’t believe in kicking a man while he’s down.”

He ended the post with another warning shot for the new middleweight champion.

“I’ve been here before and I’ve always learned and grew from these situations,” Rockhold wrote. “This will be no different. I will go home, heal up, and come back better than ever before. Bisping, I will see you real soon and I will finish this.”

Rockhold began his post by addressing the fight and giving some praise to Bisping.

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“I love the fight game and all that it offers. It’s a chaotic world we live in but the reward far outweighs risk,” Rockhold wrote. “Allowing the pressure of the situation get to me, I felt the need to preform and make a statement as opposed to staying calculated and winning the fight. I underestimated my opponent and paid for it. Forcing a fight that was unlike me, which left the door open. Credit to Michael for being the tough guy that he is and capitalizing on the situation.”