Friendly Series
Samurai Japan Series
Japan top-team tune-up windows, run around major international cycles and used for roster checks, send-off games, and national-team reps.
Past Games
Series Results
| Window | Japan vs. | Series | Scores |
|---|---|---|---|
| 2018 March | Australia | Japan 2-0 | JPN 2-0 AUSJPN 6-0 AUS |
| 2018 November | Chinese Taipei | Japan 0-1 | JPN 5-6 TPE |
| 2019 March | Mexico | Japan 1-1 | JPN 2-4 MEXJPN 6-0 MEX |
| 2019 October/November | Canada | Japan 1-1 | JPN 5-6 CANJPN 3-0 CAN |
| 2022 March | Chinese Taipei | Canceled | CanceledCanceled because of COVID-19 |
| 2022 November | Australia | Japan 2-0 | JPN 8-1 AUSJPN 9-0 AUS |
| 2023 February | Fukuoka SoftBank Hawks | Japan 2-0 | JPN 8-4 SoftBankJPN 4-2 SoftBank |
| 2023 March | Chunichi Dragons | Japan 1-1 | JPN 2-7 ChunichiJPN 4-1 Chunichi |
| 2024 March | Europe Representative | Japan 2-0 | JPN 5-0 EuropeJPN 2-0 EuropeJapan completed a combined perfect game in Game 2 |
| 2024 November | Czechia | Japan 2-0 | JPN 7-1 CZEJPN 9-0 CZE |
| 2025 March | Netherlands | Japan 2-0 | JPN 5-0 NEDJPN 9-0 NED |
| 2025 November | Korea | Japan 1-0-1 | JPN 11-4 KORJPN 7-7 KORKorea also called the window the 2025 NAVER K-Baseball Series |
| 2026 February, Miyazaki | Fukuoka SoftBank Hawks | Japan 1-1 | JPN 13-3 SoftBankJPN 0-4 SoftBankGame 1 was rain-shortened after seven innings |
| 2026 February, Nagoya | Chunichi Dragons | Japan 2-0 | JPN 5-3 ChunichiJPN 7-3 Chunichi |