"Fisiev is feeling down after the defeat and talking about changing weight class, I don't like that. He has very, very good skills. I'd like to see him start picking fights, challenging lightweights.
Going down to welterweight - first of all, it's not a good idea, you'll lose years of your career. And when your career comes to an end, the only thing that will matter is money and how long your journey was," Sonnen said.
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Recall that on March 9 at UFC 313 Fiziev lost on points to Justin Gaethje. For the Azerbaijani this defeat became the third consecutive defeat.