I was gonna say Nick took him down but really Tibau shot for a TD and Nick sprawled and got top position and smashed him.
Anyway, the only people I can remember taking Tibau down is Ferguson and Varner because his double leg is insanely good. Tibau has always had great TDD, especially when his back is against the fence, which is where Khabib's best and most TD's happen. You always hear people talk about Aldo, Chuck's and JDS's TDD, but Tibau's TDD is right up there with them. That's why Tibau is basically Khabib's toughest fight ever and why so many believe Tibau won that fight. Stylistically, he's just a hard fight for Khabib and still would be today IMO. Hell, I could honestly see Tibau taking a rematch - styles make fights, Tibau has the perfect style to beat Khabib.
He has some of the best TDD ever. Now imagine if his striking was as good as Conor's or something, he'd be top 5 that's for damn sure. Tibau is a damn good fighter, he's the kind of guy that up and coming talent have to beat in order to get to the next level. He's like, the ultimate gatekeeper, lol.