Autumn Grand Sumo Tournament champion Onosato pledged Monday to work even harder as he prepares to receive the fastest-ever promotion to ozeki.The 24-year-old's ascent to ozeki at the unprecedented pace of nine tournaments from his debut will be finalized at Wednesday's Japan Sumo Association board of directors' meeting."I'd like to work even harder for the next one," Onosato told a press conference at his Nishonoseki stable in Ami, Ibaraki Prefecture."My phone didn't stop ringing after I won the title. That made me think so many people were watching my fights."Onosato claimed his second ti…READ FULL ARTICLE