Former sekiwake Abi took sole ownership of first place at the New Year Grand Sumo Tournament with a perfect 6-0 record Friday after joint overnight leader Oshoma suffered his first loss of the 15-day competition.The 31-year-old Abi, competing as a No. 12 maegashira, thrust out 15th-ranked opponent Asakoryu (2-4) to stay ahead of the chasing pack at 5-1 including grand champions Onosato and Hoshoryu on Day 6 at Tokyo's Ryogoku Kokugikan arena.No. 7 maegashira Oshoma (5-1) was pushed out by fifth-ranked maegashira Churanoumi (3-3) and dropped down to the second rung of the leaderboard also oc…READ FULL ARTICLE