TOKYO, Nov. 11 - Haguroyama, "yokozuna" and captain of the East team, finally suffered his first "black mark" at the hands of Chiyonoyama in a big upset on the eighth day of the autumn main sumo tourney at the Meiji Shrine sumo ring here today.
    In another upset on that day, Maedayama, new "yokozuna" of the West team, was beaten by Mitsuneyama, thus tasting his third defeat since the opening day.