2 days ago, I went to Hiroshima Baseball Park and watched CARP vs GIANTS. The park is a 15-minite walk from J-Hoppers. Our Carp beat the big Giants by 6-3. You can feel the atmosphare from the link:
If you are going to stay in one of those cities, you can watch a baseball game easily.
Sapporo -> Fighters
Sendai -> Eagles
Chiba -> Marines
Tokorozawa -> Lions
Tokyo -> Giants, Swallows
Yokohama -> Baystars
Nagoya -> Dragons
Osaka, Kobe -> Buffaloes
Nishinomiya -> Tigers
Hiroshima ->Carp
Fukuoka -> Hawks
*From Kyoto, you can go to Osakam, Nishinomiya and Kobe by local train
If you don't have any favorite team and you don't know the rules very well, it would be nice to have a seat in the outfield bleachers of the the first-base side. A private cheering group of the home team should be there and you can yell for the team with a lively atmosphare. They beat drums, sing players' theme songs and enjoy simple dancing together. You can easily join them and feel kind of togetherness. Also, an outfield ticket is cheap (around 1500 yen).
Normally a night game starts at 18:00 and it takes about 3-4 hours. As foods and drinks in the park are expensive, you would better buy some before.
