The former M-1 Global titleholder strengthened his claim as a Top 10 heavyweight in the Ultimate Fighting Championship, as he rendered Tai Tuivasa unconscious with a rear-naked choke in the first round of their UFC Fight Night 239 headliner on Saturday at the UFC Apex in Las Vegas. Tuivasa (14-7, 8-7 UFC) surrendered his grip on reality 4:08 into Round 1.
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Tybura (25-8, 12-7 UFC) walked through considerable fire. Tuivasa blasted him with a series of standing elbows, one of which opened a cut on his scalp. The 33-fight veteran kept his cool under duress, closed the distance behind a one-two and completed a takedown. Tybura hammered away with sustained ground-and-pound and patiently waited for an opening to present itself. Tuivasa chose to go belly down and exposed his neck in the process. Soon after, the fight-ending choke was in place.The 30-year-old Tuiv…