Since 2017, Colorado State and San Diego State have met 4 times, and San Diego State has the better of it at 3–1.
Most recently San Diego State won 45–24 on October 3, 2025.
Right now Colorado State is 2–3 and San Diego State is 2–3, with Colorado State at 23 days since a win against San Diego State's 2.
| Date | Site | Winner | Score |
|---|---|---|---|
| Fri, Oct 3 2025 | San Diego State home | San Diego State | 45–24 |
| Sat, Nov 11 2023 | Colorado State home | Colorado State | 22–19 |
| Sat, Dec 5 2020 | San Diego State home | San Diego State | 29–17 |
| Sat, Oct 5 2019 | Colorado State home | San Diego State | 24–10 |
Full schedules and drought counters: Colorado State Rams and San Diego State Aztecs.
Colorado State vs Boise State, Colorado State vs Fresno State, Colorado State vs Oregon State, Colorado State vs Texas State, Colorado State vs Utah State, Colorado State vs Washington State.
San Diego State vs Boise State, San Diego State vs Fresno State, San Diego State vs Oregon State, San Diego State vs Texas State, San Diego State vs Utah State, San Diego State vs Washington State.