Pittsburgh Pirates vs Seattle Mariners · All-Time
15 meetings tracked · closing-line graded
RECORD
5-10
MEETINGS
15
ATS
8-4
O / U
6-6
Key Insights
- ▸Seattle Mariners lead 10-5 across 15 tracked meetings.
- ▸Games have averaged 7.6 combined points.
- ▸Pittsburgh Pirates have been the better ATS side (8-4).
Year-by-Year Record
| Season | Games | Pittsburgh Pirates | Seattle Mariners | ATS | O / U | Avg Total |
|---|---|---|---|---|---|---|
| 2026 | 3 | 2 | 1 | — | 1-2 | 7.7 |
| 2025 | 3 | 0 | 3 | 2-1 | — | 2.7 |
| 2024 | 3 | 2 | 1 | 2-1 | — | 10.0 |
| 2023 | 3 | 1 | 2 | 1-2 | 2-1 | 10.3 |
| 2019 | 3 | 0 | 3 | — | — | 7.3 |
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Frequently Asked Questions
What is the Pittsburgh Pirates vs Seattle Mariners record all-time?▾
Across 15 all-time meetings, the Seattle Mariners lead the series 10-5.
What is the ATS trend in Pittsburgh Pirates vs Seattle Mariners games?▾
ATS: Pittsburgh Pirates are 8-4 vs the spread in these matchups. Seattle Mariners are 4-8.
Do Pittsburgh Pirates vs Seattle Mariners games go over or under?▾
Over/under: games between Pittsburgh Pirates and Seattle Mariners have gone over 6 times and under 6 times, with an average combined score of 7.6.
When did Pittsburgh Pirates and Seattle Mariners last play?▾
See Last Meetings section for detailed score, spread, and total data from the most recent Pittsburgh Pirates vs Seattle Mariners games.
Where can I see the 5-year Pittsburgh Pirates vs Seattle Mariners history?▾
A 5-year head-to-head page tracks every Pittsburgh Pirates 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 2019–2026. Older meetings aren't in this dataset yet.