The Japan Amateur Baseball Association (JABA) posted a list of tournaments for the 2010 season.
|81||Intercity Baseball Tournament||12 days beginning on 8/27||Tokyo Dome||32|
|37||Industrial League Championships
|2 days beginning on 10/3||Various||32|
|Industrial League Championships
(2nd round on)
|6 days beginning on 11/9||Kyocera Dome|
|65||JABA Tokyo Sponichi||4 days beginning on 3/19||Various||16|
You can view the complete list (in Japanese and in pdf format) at the JABA site.