"I know that Herrera would never beat Provodnikov again...he was just fortunate the first time"

1)are you serious, you know?!
2)discrediting fights while saying you want harder fights is just about the most illogical thing possible. Why should people take tough fights if people will discredit at their discretion?

Herrera beat Prov, he deserves respect for that because he did that in the ring. The rematch in your mind has far far far less value than what happened in the ring.