Current-feed record
+31wins for Astros
56% Astros · 44% Mariners
Mariners have closed the gap since the 2023 schedule change: 34-16.
Houston Astros vs Seattle Mariners H2H Record
AL West rivalry
Houston Astros
Seattle Mariners
Astros lead Mariners137to106since 2002
Current-feed record from 2002 through 2026.
2026 season series: Mariners lead 9-2
Data updated 5 min read
At a glance
Current-feed analysis, 2002 to 2026
Houston Astros vs Seattle Mariners insights
Recent form
5-15last 20
Mariners on a 2-game streak
Mariners won 3-2 on Aug 16, 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 16-34, or 32% to Astros.
Astros vs Mariners postseason head-to-head record
Houston Astros and Seattle Mariners have a verified postseason subset inside the current-feed record. The playoff games are included in the overall total, not added on top of it.
- Postseason record
- Astros 3-0
- 3 postseason games since 2002
- Playoff share
- 1.2%
- Share of recorded meetings in this feed
- Regular season
- 240
- Recorded non-postseason meetings
Win Percentage
137W
106W
HOU
SEA
56%44%
Houston AstrosSeattle Mariners
Recent Games
Last 10 Games
Aug 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
SEAApr 12
SEA 6-1 HOU
SEAApr 11
SEA 8-7 HOU
SEA| Date | Home | Away | Score | Result |
|---|---|---|---|---|
| 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 |
| Apr 12, 2026 | SEA | HOU | 6–1 | SEA |
| Apr 11, 2026 | SEA | HOU | 8–7 | SEA |
Last Meeting
Aug 16, 2026Final
HOU
2
HOME
SEA
3
AWAY
Marinerswon by1run
Mariners' 2nd straight in this series·Game 243 since 2002
Streaks & Momentum
Current Streak
Seattle Mariners: 2 consecutive wins
2
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 1020%
Archive since 200256.4%
SEA↑Trending Up
Last 1080%
Archive since 200243.6%
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 Season240 games
134
106
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 | 2 | 9 | 11 |
| 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
65-48
HOU
AWAY
58-72
SEA
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
25.1%
Share of the 243 decided meetings settled by exactly one run.
Won by 2 or more
74.9%
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 | 130 | 113 | 53.5% |
| 8.5 | 113 | 130 | 46.5% |
| 9.5 | 93 | 150 | 38.3% |
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
137 W · 56.4%1.77
Seattle Mariners
106 W · 43.6%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 25.1% full archive
-0.1% in the last 20
Won by 2 or more
75%vs 74.9% full archive
+0.1% in the last 20
Average total
9.7 runsvs 8.7 runs full archive
+1 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 current-feed record since 2002.
How do recent Houston Astros vs Seattle Mariners results compare with the record since 2002?
Seattle Mariners have won 8 of the latest 10 decided meetings. Houston Astros lead the decided record 137-106. The recent window is a subset of the current-feed record since 2002, so the page reports the two 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 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
Houston Astros and Seattle Mariners have met 243 times in this archive, which covers the 2002 season onward.