It is no secret that former UFC champions Fabricio Werdum and Luke Rockhold do not like each other.

The former heavyweight champion of the world took to Twitter last night to poke fun at Rockhold’s knockout loss to newly crowned champion Michael Bisping. Check it out:

https://twitter.com/FabricioWerdum/status/739344070141607936

Werdum is coming off a knockout loss of his own, which he suffered to Stipe Miocic in the first-round of their main event fight at last month’s UFC 198 fight card in Brazil.

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