First of all, I want to say I don't consider Filip Hrgovic as an unbeatable monster. He is good, all-around good, but not special in anything. But thing is he doesn't have big weaknesses - good size, strength, speed (for his size) and power, very solid chin, good work rate and stamina. Plus he seems to be very strong mentally. Dubois, on the other hand, is very talented guy, but he has a lot of vulnerabilities. Great power but questionable chin. Good work rate but questionable stamina. Good offensive skills but poor defense. Solid fundamentals but questionable IQ. And, moreover, questionable mental strength. I don't question his heart because he has shown he can overcome adversity against Lerena and Miller, but when it's prolonged adversity, he gets discouraged badly and tries to find the way to quit. I think Hrgovic is terrible matchup for Dubois because he will bring exactly that to him - prolonged adversity. And considering Filip has a very solid chin and his fitness isn't as terrible as Miller's one, I don't think Dubois will be able to turn the fight in his favour with one punch like against Lerena or due to far superior fitness like against Miller. I think it's the fight where Dubois should step up in mental strength and ring IQ dramatically to win it. Otherwise he will get battered and stopped
Everybody has a chance, but Dubois doesn't have the greatest chin, so odds are he ends up taking a canvas nap.