Jairzinho Rozenstruik ’s callout didn’t fall on deaf ears. The Surinamese fighter made waves in the UFC’s heavyweight division on Saturday night at UFC on ESPN 7 in Washington D.C. Rozenstruik (10-0 MMA, 4-0 UFC) viciously knocked out seasoned veteran Alistair Overeem (45-18 MMA, 10-7 UFC) with just four seconds reaming on their main event bout. It was a gruesome scene . After the fight, Rozenstruik took to the mic to send some words to top contender Francis Ngannou. “I want to be back in April and I really want to fight this big scary guy Francis Ngannou ,” Rozenstruik said