Bulgarian Kotooshu upset grand champion Asashoryu Sunday to end the Mongolian yokozuna's winning streak and topple him from his position as sole front runner at the Nagoya Grand Sumo Tournament.

News photoKomusubi Kotooshu (right) falls to the dohyo with yokozuna Asashoryu before being credited with the win at the Nagoya Grand Sumo Tournament in Aichi Prefecture.

Komusubi Kotooshu rallied from a powerful blow to the face at the start, which had sent him reeling backward. Recovering his balance, the two wrestlers locked intensely in the center of the ring before Kotooshu threw Asashoryu over his right shoulder and sent him head first into the dirt to roaring cheers from the crowd.