Saitama (city) city boundaries. The western portion of the city lies on the lowland created by the Arakawa River along with those created by small rivers such as the Moto-Arakawa River, Shiba River, and Ayase River. The rest of the area mostly resides on the Ōmiya Plateau lying in the north-south direction. Dispersed in this region, major rivers flow southward, almost paralleling to one another. Saitama has ten wards ("ku"), which were assigned official colours as of April 2005: Saitama's economy is principally constituted by commercial business. The city is one of many commercial centers of the Greater Tokyo area and serves
Nihito Arakawa Solmiano scoring a knockdown in round two. After defending his title against fellow Japanese Ryūji Migaki by a unanimous decision, he travelled to Los Angeles to spar with Miguel Vázquez and others for over a month. He stopped compatriot Takehiro Shimada in round eight in his second defense in August 2012 while throwing over a hundred punches each in two rounds, and then vacated his title. In November 2012, Arakawa competed with Mexican Pedro Daniel Estrada in Mexico City on the main event of the "Gala Ring Telmex 2012". It was a WBC Silver lightweight title bout and was a