Paulo Costa claims Jiri Prochazka lied about showing mercy to Ulberg

Paulo Costa has challenged Jiri Prochazka's claim that he showed "mercy" during his fight with Carlos Ulberg. Costa believes Prochazka's statement about holding back in the bout was dishonest. The Brazilian middleweight contender expressed his skepticism publicly about Prochazka's version of events. Specific details about what prompted Costa's response or the context of Prochazka's original statement are not provided in the post.