Current-feed record
+7wins for Mariners
62% Mariners · 38% Pirates
The split has held steady across the schedule change: 7-5 since 2023.
Pittsburgh Pirates vs Seattle Mariners All-Time Record
Interleague
Pittsburgh Pirates
Seattle Mariners
Mariners lead Pirates18to11since 2004
Retrosheet history through 2025, plus 3 final games from the current feed.
2026 season series: Pirates lead 2-1
Data updated 5 min read
At a glance
Current-feed analysis, 2002 to 2026
Pittsburgh Pirates vs Seattle Mariners insights
Recent form
8-12last 20
Pirates on a 2-game streak
Pirates won 5-1 on Jun 25, 2026
Where it matters
0Postseason games
No postseason meetings since 2002.
Schedule context
- Mariners built the series lead before the 2023 schedule change, taking 11 of 17 decided meetings (65%).
- Since the schedule balanced out they are 7-5, or 58% to Mariners.
Pirates vs Mariners interleague history by season
Pittsburgh Pirates and Seattle Mariners first met in 2004, so all 29 meetings across 9 seasons sit in the current feed. Interleague scheduling makes meeting frequency uneven, so the season table matters more than a raw average.
- Active seasons
- 9
- With at least one meeting since 2002
- Busiest season
- 2016
- 4 meetings
- Per active season
- 3.2
- Uneven interleague cadence
Win Percentage
11W
18W
PIT
SEA
38%62%
Pittsburgh PiratesSeattle Mariners
Recent Games
Last 10 Games
Jun 25
PIT 5-1 SEA
PITJun 24
PIT 11-1 SEA
PITJun 23
PIT 2-3 SEA
SEAJul 6
SEA 1-0 PIT
SEAJul 5
SEA 1-0 PIT
SEAJul 4
SEA 6-0 PIT
SEAAug 18
PIT 3-10 SEA
SEAAug 17
PIT 7-2 SEA
PITAug 16
PIT 5-3 SEA
PITMay 28
SEA 6-3 PIT
SEA| Date | Home | Away | Score | Result |
|---|---|---|---|---|
| Jun 25, 2026 | PIT | SEA | 5–1 | PIT |
| Jun 24, 2026 | PIT | SEA | 11–1 | PIT |
| Jun 23, 2026 | PIT | SEA | 2–3 | SEA |
| Jul 6, 2025 | SEA | PIT | 1–0 | SEA |
| Jul 5, 2025 | SEA | PIT | 1–0 | SEA |
| Jul 4, 2025 | SEA | PIT | 6–0 | SEA |
| Aug 18, 2024 | PIT | SEA | 3–10 | SEA |
| Aug 17, 2024 | PIT | SEA | 7–2 | PIT |
| Aug 16, 2024 | PIT | SEA | 5–3 | PIT |
| May 28, 2023 | SEA | PIT | 6–3 | SEA |
Last Meeting
Jun 25, 2026Final
PIT
5
HOME
SEA
1
AWAY
Pirateswon by4runs
Pirates' 2nd straight in this series·Game 29 since 2002
Streaks & Momentum
Current Streak
Pittsburgh Pirates: 2 consecutive wins
2
Avg. Margin of Victory
Games decided by 3.8 runs on average
3.8runs
Momentum (Last 10 vs Archive since 2002)
PIT-Neutral
Last 1040%
Archive since 200237.9%
SEA-Neutral
Last 1060%
Archive since 200262.1%
Last 10 Results
PIT / SEA
Record since 2002
Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season29 games
11
18
No postseason meetings appear since 2002.
Pittsburgh Pirates Biggest Win
11–1+10 runs
Jun 24, 2026
Seattle Mariners Biggest Win
7–0+7 runs
Jun 20, 2007
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
| Season ↓ | PIT ↕ | SEA ↕ | Games ↕ |
|---|---|---|---|
| 2026 | 2 | 1 | 3 |
| 2025 | 0 | 3 | 3 |
| 2024 | 2 | 1 | 3 |
| 2023 | 1 | 2 | 3 |
| 2019 | 0 | 3 | 3 |
| 2016 | 2 | 2 | 4 |
| 2013 | 3 | 1 | 4 |
| 2007 | 1 | 2 | 3 |
| 2004 | 0 | 3 | 3 |
Home / Away Split
AWAY
5-8
PIT
AWAY
10-6
SEA
Retrosheet archiveComplete through 2025
Pittsburgh Pirates vs Seattle Mariners all-time record, 2004 to 2025
Explore how this matchup changed by decade, where each lineup produced its runs, and the games that pushed the rivalry record book. This archive is a separate source window from the current-feed sections above, which start in 2002.
- Games
- 26
- Peak inning
- EX
- Record game
- 17 runs
Two source windows. Current-feed sections: 29 games from 2004 to 2026. History Lab: 26 Retrosheet games from 2004 to 2025. The first refreshes with current finals; Retrosheet's published archive currently ends in 2025.Small historical sample: 26 games. Era and inning rates describe these meetings, but should not be treated as a forecast.
Decade balance
Select an era to inspect pace, scoring and attendance.
PITSEA
Scoring by inning
Runs per 100 batting innings, adjusted for unequal ninth and extra innings.
PITSEA
46.2
134.6
53.8
276.9
11.5
323.1
30.8
465.4
50.0
557.7
26.9
638.5
57.7
773.1
57.7
811.5
18.2
921.1
0.0
EX133.3
- PIT after scoring first
- 72.7%
- SEA after scoring first
- 93.3%
- Lead-change games
- 23.1%
- Beyond nine innings
- 2
The games at the edges
Verified single-game records from the historical matchup log.
Highest total
17 runs
SEA 6, PIT 11
May 26, 2023
Biggest margin
9 runs
PIT 10, SEA 1
Jul 27, 2016
Longest game
11 innings
PIT 5, SEA 6
Sep 19, 2019
Largest crowd
44,624
SEA 5, PIT 0
May 27, 2023
Pittsburgh Pirates largest comeback
2-run deficit
PIT 5, SEA 3
Aug 16, 2024
Seattle Mariners largest comeback
3-run deficit
PIT 4, SEA 7
Jul 26, 2016
Full archive stat line
Counting stats across games with complete team totals.
MetricPITSEA
Hits202205
Home runs2830
Walks5971
Strikeouts220223
Errors1719
Where the rivalry lived
- 0113games
PNC Park
Pittsburgh, PA
- 0213games
Safeco Field
Seattle, WA
Betting Context
Betting context since 2002
How this pairing has settled: run margins, totals and break-even prices derived from its historical record. These are final-score frequencies, not results against a closing line. We do not hold historical sportsbook prices for these games.
Small sample: 29 decided meetings, under the 50 we treat as the floor for a stable rate. Read the figures below as description, not a forecast. Interleague pairs meet in short bursts, so a single series can move any percentage here by several points.
One-run games
24.1%
Share of the 29 decided meetings settled by exactly one run.
Won by 2 or more
75.9%
A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 3.8.
Average total
7.6runs
Final-score average without accounting for park, bullpen or weather.
Home side wins
48.3%
Share of decided meetings won by the listed home team.
Totals ladder
Where the combined score landed against the half-run lines a book normally posts. Half runs cannot push, so every meeting falls on one side.
| Line | Over | Under | Over rate |
|---|---|---|---|
| 7.5Closest to even | 14 | 15 | 48.3% |
| 8.5 | 12 | 17 | 41.4% |
| 9.5 | 7 | 22 | 24.1% |
Fair price from the base rate
The decimal price that corresponds exactly to each club's win share in this archive. It describes the record and does not estimate the next game.
Seattle Mariners
18 W · 62.1%1.61
Pittsburgh Pirates
11 W · 37.9%2.64
A base rate is not a forecast. Starting pitchers, lineups, injuries and venue all matter more to a single game than a multi-season head-to-head record.
Last 20 meetings vs full history
One-run games
20%vs 24.1% full archive
-4.1% in the last 20
Won by 2 or more
80%vs 75.9% full archive
+4.1% in the last 20
Average total
7.9 runsvs 7.6 runs full archive
+0.3 runs in the last 20
Seasons 2013 to 2026. The comparison shows whether the last 20 final scores differ from the longer archive, without assigning a cause or predicting what comes next.
View the break-even percentages in another odds format with the odds converter, or compare current prices for Mariners and Pirates in the oddsmatcher.
Questions about this record: Pittsburgh Pirates vs Seattle Mariners
When did the Pittsburgh Pirates and Seattle Mariners first play each other?
The Retrosheet archive's first recorded meeting for this pairing is Jun 18, 2004, when Seattle Mariners won 5-4 away to Pittsburgh Pirates. The archive covers 26 meetings from 2004 through 2025. The current feed starts in 2002 and is reported separately.
Methodology & Data Sources
Current MLB game logs come from the balldontlie API and cover the 2002 season onward. Scores and schedule anomalies are checked against the official MLB Stats API. Spring training is excluded, while results from earlier franchise identities are merged into the current club.
The all-time record and the History Lab use Retrosheet game logs through 2025, with inning lines, team totals, attendance, duration and ballpark fields when available. Final games after 2025 come from the current feed, and every section built on that feed alone is labeled as starting in 2002.
The betting context summarizes completed final scores only. It contains no sportsbook closing lines and summarizes only completed games. Report a possible error through our contact page with the matchup and game date.
Last updated Sources: balldontlie, MLB Stats API, Retrosheet
Pittsburgh Pirates and Seattle Mariners have met 29 times in this archive, which covers the 2004 season onward.