Current-feed record
+31wins for Astros
56% Astros · 44% Mariners
Mariners have closed the gap since the 2023 schedule change: 35-17.
Houston Astros vs Seattle Mariners All-Time Record
AL West rivalry
Houston Astros
Seattle Mariners
Astros lead Mariners138to107since 2002
Retrosheet history through 2025, plus 13 final games from the current feed.
2026 season series: Mariners lead 10-3
Data updated 6 min read
At a glance
Current-feed analysis, 2002 to 2026
Houston Astros vs Seattle Mariners insights
Recent form
5-15last 20
Mariners won 6-5 on Sep 23, 2026
Where it matters
3Postseason games
3 postseason games across 1 postseason since 2002.
Schedule context
- Astros built the series lead before the 2023 schedule change, taking 121 of 193 decided meetings (63%).
- Since the schedule balanced out they are 17-35, or 33% to Astros.
Astros vs Mariners postseason head-to-head record
Houston Astros and Seattle Mariners have met 245 times since 2002, 3 times in the postseason. The playoff games are included in the all-time total, not added on top of it.
- Postseason record
- Astros 3-0
- 3 postseason games since 2002
- Playoff share
- 1.2%
- Share of all meetings
- Regular season
- 242
- Recorded non-postseason meetings
Win Percentage
138W
107W
HOU
SEA
56%44%
Houston AstrosSeattle Mariners
Recent Games
Last 10 Games
Sep 23
SEA 6-5 HOU
SEASep 22
SEA 0-7 HOU
HOUAug 16
HOU 2-3 SEA
SEAAug 15
HOU 5-10 SEA
SEAAug 14
HOU 10-7 SEA
HOUMay 14
HOU 3-8 SEA
SEAMay 13
HOU 4-3 SEA
HOUMay 12
HOU 2-10 SEA
SEAMay 11
HOU 1-3 SEA
SEAApr 13
SEA 6-2 HOU
SEA| Date | Home | Away | Score | Result |
|---|---|---|---|---|
| Sep 23, 2026 | SEA | HOU | 6–5 | SEA |
| Sep 22, 2026 | SEA | HOU | 0–7 | HOU |
| Aug 16, 2026 | HOU | SEA | 2–3 | SEA |
| Aug 15, 2026 | HOU | SEA | 5–10 | SEA |
| Aug 14, 2026 | HOU | SEA | 10–7 | HOU |
| May 14, 2026 | HOU | SEA | 3–8 | SEA |
| May 13, 2026 | HOU | SEA | 4–3 | HOU |
| May 12, 2026 | HOU | SEA | 2–10 | SEA |
| May 11, 2026 | HOU | SEA | 1–3 | SEA |
| Apr 13, 2026 | SEA | HOU | 6–2 | SEA |
Last Meeting
Sep 23, 2026Final
SEA
6
HOME
HOU
5
AWAY
Marinerswon by1run
Snapped Astros' streak·Game 245 since 2002
Streaks & Momentum
Current Streak
Seattle Mariners won the most recent meeting
1
Avg. Margin of Victory
Games decided by 3.7 runs on average
3.7runs
Momentum (Last 10 vs Archive since 2002)
HOU↓Trending Down
Last 1030%
Archive since 200256.3%
SEA↑Trending Up
Last 1070%
Archive since 200243.7%
Last 10 Results
HOU / SEA
Record since 2002
Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season242 games
135
107
Postseason3 games
3
0
Houston Astros Biggest Win
21–1+20 runs
Sep 8, 2019
Seattle Mariners Biggest Win
14–1+13 runs
Jun 5, 2019
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
| Season ↓ | HOU ↕ | SEA ↕ | Games ↕ |
|---|---|---|---|
| 2026 | 3 | 10 | 13 |
| 2025 | 5 | 8 | 13 |
| 2024 | 5 | 8 | 13 |
| 2023 | 4 | 9 | 13 |
| 2022 | 15 | 7 | 22 |
| 2021 | 11 | 8 | 19 |
| 2020 | 7 | 3 | 10 |
| 2019 | 18 | 1 | 19 |
| 2018 | 9 | 10 | 19 |
| 2017 | 14 | 5 | 19 |
| 2016 | 11 | 8 | 19 |
| 2015 | 12 | 7 | 19 |
| 2014 | 9 | 10 | 19 |
| 2013 | 9 | 10 | 19 |
| 2007 | 3 | 0 | 3 |
| 2004 | 2 | 1 | 3 |
| 2002 | 1 | 2 | 3 |
All 17 seasons are shown in the table above.
Home / Away Split
AWAY
66-49
HOU
AWAY
58-72
SEA
Retrosheet archiveComplete through 2025
Houston Astros vs Seattle Mariners all-time record, 2002 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
- 232
- Peak inning
- 1
- Record game
- 25 runs
Two source windows. Current-feed sections: 245 games from 2002 to 2026. History Lab: 232 Retrosheet games from 2002 to 2025. The first refreshes with current finals; Retrosheet's published archive currently ends in 2025.
Decade balance
Select an era to inspect pace, scoring and attendance.
HOUSEA
Scoring by inning
Runs per 100 batting innings, adjusted for unequal ninth and extra innings.
HOUSEA
58.2
146.6
48.3
239.2
58.2
341.4
51.3
445.3
54.7
543.1
55.6
648.7
56.0
745.3
45.3
849.1
37.4
933.7
42.2
EX33.3
- HOU after scoring first
- 75.2%
- SEA after scoring first
- 64.6%
- Lead-change games
- 40.1%
- Beyond nine innings
- 19
The games at the edges
Verified single-game records from the historical matchup log.
Highest total
25 runs
SEA 9, HOU 16
Apr 9, 2013
Biggest margin
20 runs
HOU 21, SEA 1
Sep 8, 2019
Longest game
18 innings
SEA 0, HOU 1
Oct 15, 2022 · Postseason
Largest crowd
47,690
SEA 0, HOU 1
Oct 15, 2022 · Postseason
Houston Astros largest comeback
7-run deficit
HOU 11, SEA 9
Sep 5, 2019
Seattle Mariners largest comeback
7-run deficit
SEA 11, HOU 8
Jul 26, 2021
Full archive stat line
Counting stats across games with complete team totals.
MetricHOUSEA
Hits2,0671,781
Home runs273242
Walks701751
Strikeouts1,8122,115
Errors104130
Where the rivalry lived
- 01123games
Minute Maid Park
Houston, TX
- 02109games
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.
One-run games
25.3%
Share of the 245 decided meetings settled by exactly one run.
Won by 2 or more
74.7%
A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 3.7.
Average total
8.7runs
Final-score average without accounting for park, bullpen or weather.
Home side wins
49.4%
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 | 131 | 114 | 53.5% |
| 8.5 | 114 | 131 | 46.5% |
| 9.5 | 94 | 151 | 38.4% |
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.
Houston Astros
138 W · 56.3%1.78
Seattle Mariners
107 W · 43.7%2.29
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
25%vs 25.3% full archive
-0.3% in the last 20
Won by 2 or more
75%vs 74.7% full archive
+0.3% in the last 20
Average total
10 runsvs 8.7 runs full archive
+1.3 runs in the last 20
Seasons 2025 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 Astros and Mariners in the oddsmatcher.
Questions about this record: Houston Astros vs Seattle Mariners
What is the Houston Astros vs Seattle Mariners postseason record?
The postseason subset contains 3 games: Houston Astros have 3 wins and Seattle Mariners have 0 wins. Those games are already included in the complete series from 2002 through 2026.
How do recent Houston Astros vs Seattle Mariners results compare with the complete record?
Seattle Mariners have won 7 of the latest 10 decided meetings. Houston Astros lead the decided record 138-107. The recent window is a subset of the complete series from 2002 through 2026, so the page reports the two separately.
When did the Houston Astros and Seattle Mariners first play each other?
The Retrosheet archive's first recorded meeting for this pairing is Jun 21, 2002, when Seattle Mariners won 8-0 away to Houston Astros. The archive covers 232 meetings from 2002 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
Houston Astros and Seattle Mariners have met 245 times in this archive, which covers the 2002 season onward.