Opening up the UFC 243 main card is a heavyweight bout between undefeated UFC debutants Justin Tafa and Yorgan De Castro.

Round 1: The two heavyweights exchange strikes before getting into a clinch position with De Castro against the fence. They eventually separate before Tafa attempts a hook but is caught by De Castro first who knocks him out cold with a walk-off knockout to end the fight.

Official Result: Yorgan De Castro defeats Justin Tafa via first-round knockout (2:10)

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