MLB · All-Time Matchup
Baltimore Orioles
VS
Seattle Mariners
Baltimore Orioles vs Seattle Mariners:All-Time Matchup History
Matchup Overview
The Baltimore Orioles and Seattle Mariners have met 78 times in MLB. The all-time series is remarkably tight, with Seattle Mariners holding a slim lead at 40–38. Baltimore Orioles have had the upper hand recently, going 3–2 in their last 5 meetings. Their most recent matchup ended 5–3 in favor of Baltimore Orioles on June 18, 2026.
Next Meeting
No upcoming game scheduled between these teams this season.
All-Time Head-to-Head
Showing 78 games from available historical data.
| Date | Away | Score | Home |
|---|---|---|---|
| Jun 18, 26 | BAL | 5–3 | SEA |
| Jun 18, 26 | BAL | 0–3 | SEA |
| Jun 17, 26 | BAL | 1–3 | SEA |
| Jun 11, 26 | SEA | 5–7 | BAL |
| Jun 10, 26 | SEA | 2–7 | BAL |
| Jun 9, 26 | SEA | 6–5 | BAL |
| Jun 8, 26 | SEA | 6–3 | BAL |
| Aug 14, 25 | SEA | 3–5 | BAL |
| Aug 13, 25 | SEA | 3–4 | BAL |
| Aug 12, 25 | SEA | 1–0 | BAL |
| Jun 5, 25 | BAL | 3–2 | SEA |
| Jun 5, 25 | BAL | 4–3 | SEA |
| Jun 4, 25 | BAL | 5–1 | SEA |
| Jul 4, 24 | BAL | 4–1 | SEA |
| Jul 4, 24 | BAL | 3–7 | SEA |
| Jul 3, 24 | BAL | 2–0 | SEA |
| May 19, 24 | SEA | 3–6 | BAL |
| May 18, 24 | SEA | 4–3 | BAL |
| May 17, 24 | SEA | 2–9 | BAL |
| Aug 13, 23 | BAL | 1–0 | SEA |
| Aug 13, 23 | BAL | 5–3 | SEA |
| Aug 12, 23 | BAL | 2–9 | SEA |
| Jun 25, 23 | SEA | 2–3 | BAL |
| Jun 24, 23 | SEA | 4–6 | BAL |
| Jun 23, 23 | SEA | 13–1 | BAL |
| Jun 29, 22 | BAL | 0–2 | SEA |
| Jun 29, 22 | BAL | 3–9 | SEA |
| Jun 28, 22 | BAL | 9–2 | SEA |
| Jun 2, 22 | SEA | 7–6 | BAL |
| Jun 1, 22 | SEA | 2–9 | BAL |
| May 31, 22 | SEA | 10–0 | BAL |
| May 5, 21 | BAL | 2–5 | SEA |
| May 5, 21 | BAL | 6–0 | SEA |
| May 4, 21 | BAL | 5–3 | SEA |
| Apr 15, 21 | SEA | 4–2 | BAL |
| Apr 15, 21 | SEA | 2–1 | BAL |
| Apr 13, 21 | SEA | 4–3 | BAL |
| Apr 13, 21 | SEA | 6–7 | BAL |
| Sep 22, 19 | SEA | 1–2 | BAL |
| Sep 21, 19 | SEA | 7–6 | BAL |
| Sep 20, 19 | SEA | 3–5 | BAL |
| Jun 23, 19 | BAL | 3–13 | SEA |
| Jun 22, 19 | BAL | 9–10 | SEA |
| Jun 22, 19 | BAL | 8–4 | SEA |
| Jun 21, 19 | BAL | 2–5 | SEA |
| Sep 6, 18 | BAL | 2–5 | SEA |
| Sep 5, 18 | BAL | 5–3 | SEA |
| Sep 4, 18 | BAL | 1–2 | SEA |
| Jun 28, 18 | SEA | 4–2 | BAL |
| Jun 27, 18 | SEA | 8–7 | BAL |
| Jun 26, 18 | SEA | 3–2 | BAL |
| Jun 25, 18 | SEA | 5–3 | BAL |
| Aug 30, 17 | SEA | 7–8 | BAL |
| Aug 29, 17 | SEA | 0–4 | BAL |
| Aug 28, 17 | SEA | 6–7 | BAL |
| Aug 16, 17 | BAL | 1–3 | SEA |
| Aug 16, 17 | BAL | 6–7 | SEA |
| Aug 15, 17 | BAL | 11–3 | SEA |
| Jul 3, 16 | BAL | 6–12 | SEA |
| Jul 3, 16 | BAL | 4–9 | SEA |
| Jul 2, 16 | BAL | 2–5 | SEA |
| Jul 1, 16 | BAL | 3–5 | SEA |
| May 19, 16 | SEA | 7–2 | BAL |
| May 18, 16 | SEA | 2–5 | BAL |
| May 17, 16 | SEA | 10–0 | BAL |
| Aug 12, 15 | BAL | 5–6 | SEA |
| Aug 12, 15 | BAL | 0–3 | SEA |
| Aug 11, 15 | BAL | 3–2 | SEA |
| May 21, 15 | SEA | 4–5 | BAL |
| May 20, 15 | SEA | 4–2 | BAL |
| May 19, 15 | SEA | 4–9 | BAL |
| Aug 3, 14 | SEA | 0–1 | BAL |
| Aug 2, 14 | SEA | 6–3 | BAL |
| Aug 1, 14 | SEA | 1–2 | BAL |
| Jul 27, 14 | BAL | 3–2 | SEA |
| Jul 26, 14 | BAL | 2–1 | SEA |
| Jul 26, 14 | BAL | 3–4 | SEA |
| Jul 25, 14 | BAL | 4–0 | SEA |
Overall Record
since 2014
Baltimore Orioles
38Seattle Mariners
4078 games in available data
Last 5 Meetings
BAL5
@Jun 18
3SEA
BAL0
@Jun 18
3SEA
BAL1
@Jun 17
3SEA
SEA5
@Jun 11
7BAL
SEA2
@Jun 10
7BAL