Stadium: Chichibunomiya Rugby Stadium Round: 6
| Japan Rugby League One | 2018/10/20 05:00 | Hino Red Dolphins v Sungoliath | L | 12-50 |
| Japan Rugby League One | 2018/12/15 04:53 | Hino Red Dolphins v Munakata Sanix Blues | L | 34-37 |
| Japan Rugby League One | 2018/12/02 02:26 | Toshiba Brave Lupus v Hino Red Dolphins | L | 48-26 |
| Japan Rugby League One | 2018/10/20 05:00 | Hino Red Dolphins v Sungoliath | L | 12-50 |
| Japan Rugby League One | 2018/10/13 04:00 | Green Rockets v Hino Red Dolphins | L | 38-12 |
| Japan Rugby League One | 2018/10/07 04:00 | Kobelco Steelers v Hino Red Dolphins | L | 74-10 |
| Japan Rugby League One | 2018/09/22 07:00 | NTT Shining Arcs v Hino Red Dolphins | L | 45-28 |
| Japan Rugby League One | 2018/09/15 07:30 | Hino Red Dolphins v Toyota Verblitz | L | 14-36 |
| Japan Rugby League One | 2018/09/08 08:00 | Toyota Industries v Hino Red Dolphins | L | 15-14 |
| Japan Rugby League One | 2018/12/01 04:56 | Sungoliath v Kubota Spears | W | 28-26 |
| Japan Rugby League One | 2018/10/20 05:00 | Hino Red Dolphins v Sungoliath | W | 12-50 |
| Japan Rugby League One | 2018/10/13 04:00 | Munakata Sanix Blues v Sungoliath | W | 18-40 |
| Japan Rugby League One | 2018/10/07 04:00 | Sungoliath v Toyota Industries | W | 35-24 |
| Japan Rugby League One | 2018/09/22 09:00 | Sungoliath v Green Rockets | W | 47-31 |
| Japan Rugby League One | 2018/09/14 10:30 | Sungoliath v Kobelco Steelers | L | 20-36 |
| Japan Rugby League One | 2018/09/07 10:30 | NTT Shining Arcs v Sungoliath | W | 18-20 |
| Japan Rugby League One | 2018/09/01 10:00 | Toyota Verblitz v Sungoliath | W | 25-27 |