On April 28, ONE Championship completes its quartet of April events on TNT, with championship gold on the line, and several high-profile rematches and returns. The card will be headlined by a surprise last-minute booking. As reigning light heavyweight champion, Aung La Nsang will now defend his title against current middleweight champion Reinier De Ridder. The same man who took that title from him and ended his run as a two-division champion in October. The Dutch fighter is stepping in on less than a week’s notice for former middleweight champ Vitaly Bigdash. After the Russian tested positive for COVID-19 late last week.