The show, in total, will feature 9 contests, with 6 of them being part of the "A class tournament", those bouts are the 6 that are shown on the poster.
The poster, whilst simple, is useful. It shows you, clearly, the 6 main bouts and the divisions they take place in. Sure it's nothing special but it's great that it's got English, as well as Japanese just to make everyone's life much easier. Simple but certainly effective.