Serbia takes on Ukraine in Zuffa Boxing 02's main card opener scheduled for Sunday, February 1st.  Radivoje Kalakdzic takes on ex-WBC champion Oleksandr Gvozdyk (pictured) in a battle between two seasoned light heavyweights with aspirations of championship gold. Serbia's Kalakdzic (29-3, 21 KOs) will end a 541-day layoff when he returns to action at the Meta Apex in Las Vegas, with the Serbian contender keen to re-establish some momentum at 175 pounds. His last outing, back in August 2024, saw Kalakdzic fall to a decision defeat to David Morrell, ending a five-fight win streak. Now he's ready to return, and faces Ukraine's former 175-pound champion. Gvozdyk captured boxing bronze for Ukraine at the London 2012 Olympics before turning pro and knocking out Adonis Stevenson in the eleventh round to capture the light heavyweight world title back 2018 in his sixteenth pro fight.  Now standing with a record of 30-2 including the World Series of Boxing, Gvozdyk plans on making another run at championship glory in Zuffa Boxing, starting with victory over former title challenger Kalajdzic on Sunday night.