The World Boxing Super Series cruiserweight tournament, already loaded, will be even stronger as two more top fighters are poised to be announced as being part of the eight-man field. Former cruiserweight titlist Krzysztof Glowacki (27-1, 17 KOs), who stopped Hizni Altunkaya on Saturday in Poland, has already signed for the tournament, a source with knowledge of the deal told ESPN on Monday. Also, the source said that although the deal is not yet finalized it "looks pretty good" that titleholder Oleksandr Usyk (12-0, 10 KOs) will also join the field. The cruiserweight field already boasts world titleholders Murat Gassiev (24-0, 17 KOs), Mairis Briedis (22-0, 18 KOs) and Yunier Dorticos (21-0, 2 KOs) as well as former titleholder Krzysztof Wlodarczyk (53-3-1, 37 KOs). The super middleweight tournament field only has titlist George Groves (26-3, 19 KOs) and needs to be filled out. The draw for each single-elimination tournament, due to begin this fall, will take place on July 8 in Monte Carlo with the top four seeds (which are to be determined) in each field selecting their quarterfinal opponent from the remaining unseeded fighters.