Paulo Costa responds to Bogdan Guskov's callout

Brazilian middleweight Paulo Costa has responded to a callout from Bogdan Guskov. The post does not provide details of Costa's response or the nature of Guskov's original challenge. Guskov has been vocal about seeking high-profile opponents recently. No additional context about potential matchmaking or timeline was included in the announcement. This marks another chapter in Guskov's campaign to secure a notable name on his record.