Eleider Alvarez is ready to face "the best fighters in the world" after shocking Sergey Kovalev in Atlantic City on Saturday.
The Alvarez took the WBO light heavyweight title with a technical knockout in the seventh round.
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The 34-year-old, nicknamed 'Storm', floored Kovalev with a big, straight right hand in the seventh and knocked him down twice more to consign the Russian to the third defeat of his career.
A unification bout between Alvarez and Dmitry Bivol could now be on the cards and the Colombian says he is ready to take on all comers.
"I am ready for all the best fighters in my division," Alvarez said. "And the best fighters in the world."
Kovalev was taken to the hospital for precautionary checks after losing a fight which he appeared to be in control of.
Kathy Duva, Kovalev's promoter, said: "Sergey was way ahead, but I think he seems to gas out after six rounds. That was the magic round with [Andre] Ward [in their first fight]. I assume he got tired.
"I was very happy with how the fight was going, but I kept saying to [Kovalev's manager] Egis [Klimas], 'Let's get past the sixth round, and I'll relax.' But you saw what happened.
"I don't want to take anything away from what Alvarez accomplished. Sergey was dominating, and Alvarez came back and stopped him.
"That was a pretty impressive accomplishment. Sergey was fighting brilliantly for six rounds, but he gassed out."
