be determined by win–loss records. If a wrestler has withdrawn due to injury or retirement from a scheduled bout, his opponent wins by default (fusenshō). A loss by default is known as fusenpai. Any remaining bouts that a wrestler misses will be regarded as losses when drawing up the next tournament's rankings. If a withdrawal results in an odd number of wrestlers in one division, the schedule is filled in by pairing a lower-ranked wrestler against a higher-ranked wrestler from the next-lowest division. Schedule The Ryōgoku Kokugikan is owned by the Japan Sumo Association and is therefore the only venue set up for sumo all year round. Preparing the other venues for their respective honbasho begins a week in advance. 2020's July and November tournaments and the March 2021 tournament were all held at the Ryōgoku Kokugikan in Tokyo to avoid unnecessary travel during the COVID-19 pandemic in Japan. Former venues The current Ryōgoku Kokugikan was opened in 1985. Prior to that an arena of the same name hosted honbasho in Tokyo from 1909 to 1946. From the 1950s through 1984, tournaments were held at the Kuramae Kokugikan in Tokyo. Cancelled tournaments The March 2011 tournament was cancelled due to the Japan Sumo Association launching an investigation into allegations of match-fixing involving several sekitori-ranked wrestlers. This was the first cancellation of a honbasho since 1946, when the May tournament was not held because of renovations to the Ryōgoku Kokugikan following damage sustained in World War II. The May 2011 tournament went ahead, but was described by the Sumo Association as a "technical examination" tournament rather than a full-fledged honbasho, with tickets given away for free in a lottery, and no prize money or trophies awarded. The March 2020 tournament was conducted without spectators due to the recent COVID-19 pandemic in Japan and surrounding areas. It was the first time since World War II that a basho had been closed to the general public. The move followed a request from the Japanese Government that major public events be cancelled, postponed or scaled down in order to control the spread of the virus. The Sumo Association added that if any of the wrestlers during the tournament were found to be infected with COVID-19, the rest of the tournament would have been cancelled. The May tournament that year was cancelled as the pandemic continued in Japan. See also List of sumo tournament top