[5] Koshigaya Alphas 77-75 Ibaraki Robots [2] 2021-04-23 10:00
Stadium: Koshigaya Municipal Gymnasium Round: 1
Head to Head
| Japan B League 2 | 2021/04/15 10:00 | Ibaraki Robots v Koshigaya Alphas | L | 101-89 |
| Japan B League 2 | 2021/01/27 08:00 | Koshigaya Alphas v Ibaraki Robots | W | 88-83 |
| Japan B League 2 | 2020/11/08 05:00 | Ibaraki Robots v Koshigaya Alphas | W | 91-92 |
| Japan B League 2 | 2020/11/07 08:00 | Ibaraki Robots v Koshigaya Alphas | L | 101-91 |
| Japan B League 2 | 2019/11/03 06:00 | Koshigaya Alphas v Ibaraki Robots | L | 95-100 |
| Japan B League 2 | 2019/11/02 06:00 | Koshigaya Alphas v Ibaraki Robots | W | 98-82 |
| Club Friendlies | 2019/08/17 03:20 | Ibaraki Robots v Koshigaya Alphas | L | 84-54 |
Home History
| Japan B League 2 | 2021/04/21 10:00 | Koshigaya Alphas v Sendai 89ers | L | 63-73 |
| Japan B League 2 | 2021/04/18 05:00 | Gunma Crane Thunders v Koshigaya Alphas | L | 86-78 |
| Japan B League 2 | 2021/04/17 08:00 | Gunma Crane Thunders v Koshigaya Alphas | L | 86-69 |
| Japan B League 2 | 2021/04/15 10:00 | Ibaraki Robots v Koshigaya Alphas | L | 101-89 |
| Japan B League 2 | 2021/04/10 05:00 | Koshigaya Alphas v Earth Friends Tokyo Z | L | 78-79 |
| Japan B League 2 | 2021/04/09 10:00 | Koshigaya Alphas v Earth Friends Tokyo Z | L | 72-77 |
| Japan B League 2 | 2021/03/21 05:00 | Gunma Crane Thunders v Koshigaya Alphas | L | 100-68 |
| Japan B League 2 | 2021/03/20 08:00 | Gunma Crane Thunders v Koshigaya Alphas | L | 96-81 |
Away History
| Japan B League 2 | 2021/04/18 05:00 | Ibaraki Robots v Sendai 89ers | W | 104-86 |
| Japan B League 2 | 2021/04/17 08:00 | Ibaraki Robots v Sendai 89ers | W | 102-93 |
| Japan B League 2 | 2021/04/15 10:00 | Ibaraki Robots v Koshigaya Alphas | W | 101-89 |
| Japan B League 2 | 2021/04/11 03:00 | Yamagata Wyverns v Ibaraki Robots | W | 70-85 |
| Japan B League 2 | 2021/04/10 08:00 | Yamagata Wyverns v Ibaraki Robots | W | 71-90 |
| Japan B League 2 | 2021/04/07 10:00 | Ibaraki Robots v Kumamoto Volters | W | 107-71 |
| Japan B League 2 | 2021/03/20 08:00 | Ibaraki Robots v Kumamoto Volters | W | 111-82 |
| Japan B League 2 | 2021/03/14 05:00 | Ibaraki Robots v Earth Friends Tokyo Z | W | 86-68 |