ATLANTIC CITY, N.J. (AP) — Javier Fortuna stopped Miguel Zamudio with a devastating left hand in the first round at Tropicana Casino and Resort on Friday night, a day after losing his WBA interim featherweight championship when he failed to make the 126-pound weight limit.

Fortuna, from the Dominican Republic, improved to 22-0 with his 15th knockout.

Fortuna swarmed Zamudio, from Mexico, in the opening seconds of the scheduled 12-rounder and dropped him with an overhand left. Zamudio scrambled to his feet, but wasn't upright for long. Fortuna capped another flurry with a left that left Zamudio unconscious on the canvas, prompting referee Eddie Cotton to stop the fight at 1:08 without a count. Zamudio dropped to 25-2-1.