Steven Butler put in a methodical performance that allowed him to stop dangerous veteran Carson Jones in the seventh round on Saturday night at the Montreal Casino in Montreal.
Jones (40-14-3, 30 KOs) had already visited the mat on two occasions - in the fifth and sixth rounds - before referee Alain Villeneuve decided that he had seen enough at 50 seconds of the seventh.
Butler's record was raised to 24-1-1. This is a 21st knockout for the 22-year-old Montrealer, who fought this fight in the middleweight limit, where he is ranked eighth in the World Boxing Organization (WBO).
For Jones, it was his third loss in a row after dropping a decision in his last fight to Ted Cheeseman in February.
"I feel stronger on my legs at 160 pounds and I have not lost my power," said Butler, who holds the international title of the International Boxing Organization (IBO) at super welterweight, to La Presse.
"We are keeping the door open for big fights at 154 pounds, because I'm able to make the weight easily, but I think my future is at 160."