The Tokyo Dome is the place to see another extremely popular sport in Japan, baseball, whereas soccer matches usually take place at the Ajinomoto Stadium.
If you're more of a doer than a watcher, then contact the Tokyo Metropolitan Sports Facilities Service, which is responsible for sports facilities in metropolitan parks. Showa Kinen Park also offers facilities for sports and outdoor activities.
There are tennis courts and swimming pools available at theJapan Institute of Sports Sciences (JISS): National Agency for the Advancement of Sports and Health (NAASH).