One of Japan's six big sumo tournaments that are held each year is going on right now in Osaka. There are several YouTube channels that show the tournament or show highlights.
The YouTube channel "Don Don Sumo" is a good one because it shows the top 5 fights of the day and gives a good breakdown of what happened in each fight.
The big tournaments of the year are as follows;
January (Tokyo): Hatsu Basho (New Year's Tournament)
March (Osaka): Haru Basho (Spring Tournament)
May (Tokyo): Natsu Basho (Summer Tournament)
July (Nagoya): Nagoya Basho
September (Tokyo): Aki Basho (Autumn Tournament)
November (Fukuoka): Kyushu Basho
