Watch the review of the most interesting boxing news from Sport.ua WBC, WBO and WBA heavyweight champion Oleksandr Usyk posted a poster with American blogger Jake Paul on social media. The rivals are planning to fight under mixed martial arts rules. IBF lightweight title holder Vasyl Lomachenko may not return to the ring – the boxer has back problems and continues to struggle with injuries. The Ukrainian has a deferment from the International Boxing Federation – during his absence, the interim title will be contested between a Russian and an American. Promising boxer Daniel Lapin, who holds the WBA Continental and IBF Inter-Continental light heavyweight titles, was forced to withdraw from the upcoming fight. The Ukrainian will not be able to enter the ring on April 12 due to an injury. See a selection of the most interesting news in the world of boxing from Sport.ua. VIDEO: Usyk Wants to Beat Jake Paul, Lomachenko Has Back Problems, Lapin Injured 
VIDEO. Usyk wants to beat Jake Paul, Lomachenko has health problems
