Former komusubi Abi has handed in a letter of retirement to the Japan Sumo Association, a source at his stable said Wednesday, after violating guidelines aimed at preventing the spread of the novel coronavirus during the July Grand Sumo Tournament.Related coverage:Sumo: Wrestler ripped for eating out during coronavirus crisisAbi started the July meet as No. 5 maegashira but was pulled out by his Shikoroyama stablemaster midway through the 15-day event in Tokyo after it was revealed he had gone out twice to hostess bars with a lower-ranked wrestler from a different stable, once before and on…READ FULL ARTICLE