Paulo Costa accuses Jiri Prochazka of lying about showing mercy vs Ulberg

Paulo Costa has publicly stated that he believes Jiri Prochazka lied about showing mercy during his fight with Carlos Ulberg. The post from a Russian MMA Telegram channel suggests Costa is calling out Prochazka's post-fight claims. No additional context about the specific incident or when this statement was made is provided in the original post. The channel presented this as Costa speaking facts.