Paulo Costa calls out Jiri Prochazka for lying about showing mercy against Ulberg

Paulo Costa has publicly disputed Jiri Prochazka's recent claims about showing mercy during his fight with Carlos Ulberg. The Brazilian middleweight contender posted that Prochazka lied about the supposed mercy shown in that bout. The post does not provide additional context about the original Prochazka comments or when the Ulberg fight occurred. Costa's statement appears to challenge the narrative Prochazka has been sharing about his conduct during the fight. Details about what specifically Prochazka claimed or why Costa is disputing it now are not included in the brief post.