I have Petr winning this fight, I even think he won all 3 rounds even though he got cut with that knee and rocked early (he landed a ton of counters and the TDs/control time have to count for something)
but this was a really close fight, I could somehow see it if judges gave it to Sean although I don't think he personally deserves a W.
But, he is a very legit fighter and not the hype train that people have thought of him to be. If he can compete with Petr like this, he is for sure a top level fighter.