The last train problem
Most Japanese trains stop between 00:00 and 00:30. Night baseball games start at 18:00 and end around 21:15. That gives you about 2.5-3 hours to get home. Usually plenty of time. But extra innings, rain delays, or a distant hotel can cut it close.
Central Tokyo stadiums: no problem
Tokyo Dome (Suidobashi), Jingu Stadium (Gaienmae): Games end by 21:30 at latest. Last trains from these stations run past midnight. You'll make it even with extra innings.
Suburban stadiums: plan ahead
Belluna Dome (Seibu Lions)
The Seibu Yamaguchi Line's last train to Tokorozawa is around 22:00. If the game goes long, you might need to take a taxi from the area. Leave by the 8th inning if you're worried.
ZOZO Marine Stadium (Lotte Marines)
Last train from Kaihimmakuhari to central Tokyo is around 23:30. Normal games end with plenty of buffer. Extra innings could make it tight.
Shinkansen stadiums
If you're returning to another city by Shinkansen after a game, check the last departure. The last Tokyo-bound Shinkansen from Osaka is around 21:30. A day game is safe. A night game in another city usually means you need a hotel.
Backup options
Taxi: expensive (Β₯5,000-15,000 depending on distance) but always available. Manga cafe (manga kissa): 24-hour cafes with private booths, showers, and drinks for about Β₯2,000-3,000 per night. A genuine Japanese experience. Capsule hotel: Β₯3,000-4,000 near major stations.
The practical move
Check last train times on Google Maps before the game. Set a phone alarm for 30 minutes before the last train. If the game is still on, you can decide whether to stay or go.