(Kyodo). TOKYO, Jan. 21 - A merit system under which a Grand Champion can be demoted has been adopted by the Sumo Association. Hitherto a sumo wrestler once attaining the Grand Champion rank held it permanently until his retirement.
    At a meeting of officers Friday at 10 a.m., the Sumo Association decided to recognize a system which provided that a Grand Champion should be degraded on his showings in the tournaments.
    Criticism was raised against the present system, not only by the sumo fans but also by the progressive elements within the Sumo Association. The situation was brought to the fore when all three grand Champions announced their decision to "sit out" the current spring tournament.
    Formal approval of the new system will be made on January 29, the last day of the current tournament, after working out details for the revolutionary change.