Callum Smith made his light heavyweight debut with a terrifying knockout of Lenin Castillo on Saturday night.
The former WBA super middleweight champion looked impressive in his first fight at 175 pounds, which took place on the Anthony Joshua vs. Oleksandr Usyk undercard.
However, their celebrations quickly came to a halt.
Smith hit Castillo with a right hand in the second round that saw him collapse backward onto the mat.
He lay on his back shaking and the referee immediately rejected the fight.
Medical personnel responded quickly and treated Castillo, who was removed from the ring minutes later.
Fortunately, the positive updates followed after the troubling scene.
Eddie Hearn revealed that Castillo was “responsive” when he left the stadium to go to the hospital.
Sky Sports added that he was “conscious” and was only going to the hospital for “precautionary measures.”
Smith was defeated by Canelo Alvarez last year, but now he will look to make an impact in his new weight class.
The light heavyweight champions will undoubtedly realize their first victory in the division.
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