The Oza title is recently decided in a best of five match. The challenger of the title holder is decided in a challenger knockout tournament featuring 16 players. The 49th edition gives you some idea of the tournament structure. Up to the 31st edition the title match was decided in a best to three match. Up to the 15th edition the title was decided by a match between the finalists of the knockout main tournament. Fujisawa Hideyuki was thus the first player to hold the title. The Japanese Title Overview page shows what's available.
In the overview players link to their biographies while results link to a detailed description of the edition.
If you have additional information to the supplied info or if you can supply us with the results of other tournaments please send an E-mail about it and it will be included on these pages.