Francis Ngannou obliterates Alistair Overeem with devastating one-punch first-round KO

Francis Ngannou (R) lands a left hook Saturday that KOs Alistair Overeem in the first round of their bout at UFC 218 in Detroit. Alistair Overeem has fought 60 times in MMA, including 13 in the UFC. Never was he handled the way was Saturday by the sport’s newest star, Francis Ngannou.