St. Pierre spoke out about Pereira's possible move to heavyweight division

"Alex Pereira is the best puncher to ever compete at flyweight. But there's the question of how would he perform against a guy who uses wrestling and bases his plan on working in the parterre? He needs to answer that question before moving up in weight," St. Pierre is quoted as saying by Yardbarker.

Recall that Pereira knocked out Jiri Prochazka in the second round at the end of June at UFC 303.