Arizona Diamondbacks vs Seattle Mariners · All-Time
18 meetings tracked · closing-line graded
RECORD
7-11
MEETINGS
18
ATS
7-5
O / U
3-9
Key Insights
- ▸Seattle Mariners lead 11-7 across 18 tracked meetings.
- ▸Games have averaged 7.8 combined points.
- ▸Arizona Diamondbacks have been the better ATS side (7-5).
- ▸Strong Under trend: 3-9 O/U.
Year-by-Year Record
| Season | Games | Arizona Diamondbacks | Seattle Mariners | ATS | O / U | Avg Total |
|---|---|---|---|---|---|---|
| 2026 | 3 | 0 | 3 | 2-1 | 1-2 | 8.0 |
| 2025 | 3 | 3 | 0 | — | 2-1 | 10.7 |
| 2024 | 3 | 1 | 2 | 1-2 | — | 5.3 |
| 2023 | 3 | 1 | 2 | 1-2 | — | 6.0 |
| 2020 | 3 | 1 | 2 | — | — | 9.0 |
| 2018 | 3 | 1 | 2 | — | — | 7.7 |
Ask Optimus about Arizona Diamondbacks vs Seattle Mariners
Pick a starter or type your own. First query is free.
More from this matchup
Frequently Asked Questions
What is the Arizona Diamondbacks vs Seattle Mariners record all-time?▾
Across 18 all-time meetings, the Seattle Mariners lead the series 11-7.
What is the ATS trend in Arizona Diamondbacks vs Seattle Mariners games?▾
ATS: Arizona Diamondbacks are 7-5 vs the spread in these matchups. Seattle Mariners are 5-7.
Do Arizona Diamondbacks vs Seattle Mariners games go over or under?▾
Over/under: games between Arizona Diamondbacks and Seattle Mariners have gone over 3 times and under 9 times, with an average combined score of 7.8.
When did Arizona Diamondbacks and Seattle Mariners last play?▾
See Last Meetings section for detailed score, spread, and total data from the most recent Arizona Diamondbacks vs Seattle Mariners games.
Where can I see the 5-year Arizona Diamondbacks vs Seattle Mariners history?▾
A 5-year head-to-head page tracks every Arizona Diamondbacks vs Seattle Mariners meeting from the last five full seasons. Link at the bottom of this page.
Data coverage: Trendline's head-to-head records include closing-line-graded games from 2018–2026. Older meetings aren't in this dataset yet.