Baseball

Baseball is a popular sport in Japan.
There are two teams.
One team bats and one team fields.
You have to go to home base if you are a batter, while the fielding team has to try and stop you.
There are four bases.
The team with the most runs wins.

Sumo Wrestling

Sumo Wrestling is where two fat Sumo Wrestlers come out and fight eachother.
They wear a mawashi which is a belt that covers their 'lower half' but not part of their bum, with a string that goes down the middle of it.