KNOCKOUT on Instagram: "Leon Edwards’ head kick knockout of Kamaru Usman at UFC 278 is one of the most shocking moments in MMA history. For nearly five rounds, Usman controlled the fight, dominating with his wrestling and relentless pressure. Edwards looked defeated, outworked, and down on the scorecards. With less than a minute left, the commentary team was already writing his obituary in the fight. Then, in a split second, Edwards delivered a perfectly timed left high kick that landed flush on