[5] Koshigaya Alphas 72-61 Sendai 89ers [4] 2021-05-22 06:00
Stadium: Koshigaya Municipal Gymnasium Round: 50
Head to Head
| Japan B League 2 | 2021/05/21 10:00 | Koshigaya Alphas v Sendai 89ers | L | 73-74 |
| Japan B League 2 | 2021/04/21 10:00 | Koshigaya Alphas v Sendai 89ers | L | 63-73 |
| Japan B League 2 | 2021/01/31 04:00 | Sendai 89ers v Koshigaya Alphas | W | 63-75 |
| Japan B League 2 | 2021/01/30 06:00 | Sendai 89ers v Koshigaya Alphas | W | 89-101 |
| Japan B League 2 | 2020/12/09 10:00 | Koshigaya Alphas v Sendai 89ers | W | 72-64 |
| Japan B League 2 | 2020/10/28 10:00 | Sendai 89ers v Koshigaya Alphas | W | 82-91 |
| Japan B League 2 | 2020/02/09 06:00 | Koshigaya Alphas v Sendai 89ers | L | 55-58 |
| Japan B League 2 | 2020/02/08 06:00 | Koshigaya Alphas v Sendai 89ers | L | 68-85 |
Home History
| Japan B League 2 | 2021/05/21 10:00 | Koshigaya Alphas v Sendai 89ers | L | 73-74 |
| Japan B League 2 | 2021/05/16 04:00 | Gunma Crane Thunders v Koshigaya Alphas | L | 83-71 |
| Japan B League 2 | 2021/05/15 08:00 | Gunma Crane Thunders v Koshigaya Alphas | L | 94-90 |
| Japan B League 2 | 2021/05/09 05:00 | Fighting Eagles Nagoya v Koshigaya Alphas | W | 79-86 |
| Japan B League 2 | 2021/05/08 05:00 | Fighting Eagles Nagoya v Koshigaya Alphas | W | 85-91 |
| Japan B League 2 | 2021/05/07 09:30 | Fighting Eagles Nagoya v Koshigaya Alphas | L | 73-70 |
| Japan B League 2 | 2021/04/24 05:00 | Koshigaya Alphas v Ibaraki Robots | W | 105-103 |
| Japan B League 2 | 2021/04/23 10:00 | Koshigaya Alphas v Ibaraki Robots | W | 77-75 |
Away History
| Japan B League 2 | 2021/05/21 10:00 | Koshigaya Alphas v Sendai 89ers | W | 73-74 |
| Japan B League 2 | 2021/05/16 05:00 | Ibaraki Robots v Sendai 89ers | L | 81-78 |
| Japan B League 2 | 2021/05/15 05:00 | Ibaraki Robots v Sendai 89ers | L | 73-56 |
| Japan B League 2 | 2021/05/08 06:00 | Kobe Storks v Sendai 89ers | W | 66-69 |
| Japan B League 2 | 2021/05/07 08:00 | Kobe Storks v Sendai 89ers | W | 75-77 |
| Japan B League 2 | 2021/05/01 06:00 | Ibaraki Robots v Sendai 89ers | L | 96-67 |
| Japan B League 2 | 2021/04/30 10:00 | Ibaraki Robots v Sendai 89ers | W | 78-81 |
| Japan B League 2 | 2021/04/25 04:00 | Sendai 89ers v Gunma Crane Thunders | W | 93-80 |