LAS VEGAS -- Thiago Santos brought a four-fight winning streak into UFC 200.
But then, he didn't fight anyone of Gegard Mousasi's caliber during that stretch.
Mousasi, the former Strikeforce and Dream light heavyweight champion, put on a clinic Saturday night at T-Mobile Arena as he finished Santos with a first-round knockout. The time of the stoppage was 4:32.
After an early feeling-out period, Mousasi dropped Santos to the mat with a shot, then worked for position from the top.
Santos (13-4) finally managed to break free and get to his feet, but he was met with a perfectly timed right hand to the jaw.