Tumwater T-Birds
First meeting: Sept. 23, 2016 - Tumwater 27, Union 20
Latest meeting: Oct. 3, 2025 - Tumwater 48, Union 0
Next meeting: TBD
Meetings total: 4
All-time series: Tumwater Leads 3-1
League series: n/a
Post-season series: n/a
Largest victory: Tumwater, 48-0 (2025)
Longest win streak: Tumwater, 2 (2024-present)
Current win streak: Tumwater, 2 (2024-present)
| Tumwater Victories | Union Victories | Tie Games |
| No. | Date | Winning Team | Losing Team | |||
| 1 | Sept. 23, 2016 | at Tumwater | 27 | Union | 20 | |
| 2 | Sept. 22, 2017 | at Union | 33 | Tumwater | 29 | |
| 3 | Oct. 4, 2024 | Tumwater | 56 | at Union | 10 | |
| 4 | Oct. 3, 2025 | at Tumwater | 48 | Union | 0 | |