Ukrainian boxer Denis Berinchik lost his WBO championship belt in lightweight, losing to Kishon Davis.
The American got the victory with a technical knockout in the fourth round.
Olympic champion in the Greco-Roman struggle Jean Belenyuk reacted to the early defeat of the compatriot.
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Olympic champion in sports gymnastics Oleg Vernyaev also supported Berinchik.
“Brother, you are still a champion,” Vernyaev said.
Earlier, Crawford spoke about Davis's victory over Borinchik.