--- title: "Explosive Finale: Sirenko Knockouts Favorite Vallin in New York" description: "Ukrainian heavyweight Vladyslav Sirenko sensationally knocked out tournament favorite Otto Vallin in New York! πŸ‡ΊπŸ‡¦πŸ₯Š The fight ended in the final seconds of the 10th round with a powerful blow that sent the Swede into a knockout. This victory has elevated Sirenko to a new level in the world rankings. πŸš€" date: 2026-07-27T06:24:00.000Z lang: en url: https://xab.info/en/posts/sirenko-knockouts-vallin-at-zuffa-boxing-9 tags: [vladyslav-sirenko, otto-wallin, zuffa-boxing, boxing, new-york] publisher: "XAB.info" --- # Explosive Finale: Sirenko Knockouts Favorite Vallin in New York ![Boxer Sirenko delivers a knockout punch to favorite Vallin in the final match in New York](https://xab.info/media/2026/07/27/sirenko-nokautiroval-valina-na-turnire-zuffa-boxing-9/sirenko-nokautiroval-valina-na-turnire-zuffa-boxing-9-1.webp) The night of July 27 in New York will be remembered by boxing fans as a time of triumph for the Ukrainian heavyweight. At the Zuffa Boxing 9 tournament, Vladyslav Sirenko created a sensation, defeating the renowned Swedish boxer Otto Vallin. The bout, initially viewed as a test for the Ukrainian, ended with a brutal knockout in the final seconds. ### Dominance from the First Seconds From the very first seconds of the 10-round fight, Sirenko took the initiative. Instead of fearing his opponent's reputation, the Ukrainian imposed aggressive pressure on the Swede and forced him to work at close range. Vallin, considered the clear favorite, tried to hold back the onslaught with jabs, but the Swede's defense was regularly broken by Sirenko's dangerous uppercuts. ### Battle of Paces The middle of the fight was marked by a slight drop in pace, however, Vladyslav looked fresher than his renowned opponent. In the 8th and 9th rounds, the Ukrainian exploded again with powerful combinations, forcing Vallin to make mistakes and lose control of the distance. ### The Decisive Blow The fate of the fight was decided in the final round. A few seconds before the final bell, Sirenko landed a precise and powerful uppercut to his opponent's head. Vallin collapsed onto the ring canvas unconscious and could not get up for a long time, despite the doctors' assistance. This blow became the culmination of a tense struggle and brought the Ukrainian a victory by technical knockout in the 10th round. ### A New Level of Career This victory became one of the brightest in the career of the 31-year-old boxer. With a record of 22-1 (19 KOs), Vladyslav Sirenko has elevated himself to a new level in the world heavyweight rankings. A reminder of recent successes in Ukrainian boxing: earlier, Oleksandr Khizhnyak also defeated an undefeated Frenchman in his second professional bout.