Round 1: Head kicks are the theme for the beginning of this fight, with one being thrown by each fighter. After a short scramble, the two fighters clinch and Semerzier is able to get a nice takedown. Caceres gets back to the feet, throws a knee, but later gets taken down again by his opponent. Back on the feet and halfway through the round, Semerzier gets the takedown and full mount. Now hanging from his opponent’s back, Semerzier gets Caceres down and locks in the rear naked choke for the first round submission win!Official call: Mackens Semerzier def. Alex Caceres via submission (rear naked choke) 3:18 of round 1.