OSAKA -- Ozeki Chiyotaikai was toppled by Tosanoumi for his first loss of the Spring Grand Sumo Tournament on Tuesday to suffer an early dent in his chances for possible promotion to yokozuna.

The other ozeki in the yokozuna hunt, Tochiazuma, as well as reigning grand champion Musashimaru, meanwhile, racked up convincing wins at Osaka Prefectural Gymnasium to head up a pack of seven wrestlers who are unbeaten three days into the 15-day meet.

In Tuesday's biggest upset, Chiyotaikai roared out to the better start, driving top maegashira Tosanoumi to the edge of the ring with a barrage of jabs and thrusts.