Darko is just another roid head from Eastern Europe, There was a lot of hype behind the guy, but only from Serbians, no one else really, it's just that they spam about him on youtube and talk about him as if he is a worldbeater and "Future Champion". If you watched his first fight against Jeremy Kimball then you would see that he was passive there aswell. Kimball was just an idiot and went for a takedown, super telegraphed and Darko with his Judo background handled him easily and ground and pounded him, but nothing else was impressive from him in that fight.
I am more interested to see Dusko Todorovic, he is from the same country as Darko and he seems to have some potential, way more than this stocky Darko guy. But he's fighting John Phillips in his first fight in the UFC and that guy has some vicious power in his hands. The only thing I am a bit worried about in that fight for Dusko is that he leaves his chin up and lets his hands go down and that might just be a recipe for a brutal KO. His head movement is very slick tho, I see a combination of Silva's head movement and Nate Diaz style of boxing, he really likes to pressure as well and has a good ground game, high fight IQ and from what I have been able to see a background in TKD and BJJ, black belt in both and because I have a TKD background as well it's interesting to see what he can do in the UFC imo. Interesting prospect, only 25 y/o. I really like to study upcoming prospects. Then the prelims suddenly become way more interesting when you know the fighters.
Some videos of him that I found:
This is some highlight, from the Dana White contender series. It wasn't his best performance, but I saw potential and I must say, It's pretty fucking entertaining to watch him. He has a win over Michel Pereira, for whatever that is worth nowadays