Oakland Athletics vs Seattle Mariners H2H Record

AL West rivalry
Oakland Athletics
Seattle Mariners
Mariners lead Athletics239to198since 2002

Current-feed record from 2002 through 2026.

2026 season series tied 4-4

By

Data updated 5 min read

At a glance

Current-feed analysis, 2002 to 2026

Oakland Athletics vs Seattle Mariners insights

Current-feed record
+41wins for Mariners
55% Mariners · 45% Athletics

Mariners have pulled further ahead since 2023: 32-15.

Recent form
10-10last 20
Athletics on a 2-game streak

Athletics won 7-6 on Sep 4, 2026

Where it matters
0Postseason games

No postseason meetings since 2002.

Schedule context
  • Mariners built the series lead before the 2023 schedule change, taking 207 of 390 decided meetings (53%).
  • Since the schedule balanced out they are 32-15, or 68% to Mariners.

Athletics vs Mariners same-league record by season

Oakland Athletics and Seattle Mariners met in 25 seasons inside the current feed. Their shared league makes the season table the most useful view.

Active seasons
25
With at least one meeting since 2002
Busiest season
2002
20 meetings
Per active season
17.5
Average recorded meetings
Win Percentage
198W
239W
OAK
SEA
45%55%
Oakland AthleticsSeattle Mariners

Recent Games

Last 10 Games
Sep 4
SEA 6-7 OAK
OAK
Sep 3
SEA 4-7 OAK
OAK
May 27
OAK 1-9 SEA
SEA
May 26
OAK 1-4 SEA
SEA
May 25
OAK 2-9 SEA
SEA
Apr 22
SEA 5-4 OAK
SEA
Apr 21
SEA 2-5 OAK
OAK
Apr 20
SEA 4-6 OAK
OAK
Aug 24
SEA 11-4 OAK
SEA
Aug 23
SEA 1-2 OAK
OAK
Last Meeting
Sep 4, 2026Final
SEA
6
HOME
OAK
7
AWAY
Athleticswon by1run
Athletics' 2nd straight in this series·Game 437 since 2002
Streaks & Momentum
Current Streak
Oakland Athletics: 2 consecutive wins
2
Avg. Margin of Victory
Games decided by 3.2 runs on average
3.2runs
Momentum (Last 10 vs Archive since 2002)
OAK-Neutral
Last 1050%
Archive since 200245.3%
SEA-Neutral
Last 1050%
Archive since 200254.7%
Last 10 Results
OAK / SEA

Record since 2002

Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season437 games
198
239
No postseason meetings appear since 2002.
Oakland Athletics Biggest Win
12–0+12 runs
Sep 21, 2003
Seattle Mariners Biggest Win
13–0+13 runs
Jul 2, 2003
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
Season ↓OAK ↕SEA ↕Games ↕
2026448
20256713
20244913
202311213
202281119
202141519
20206410
201910919
201891019
201771219
201671219
201561319
201491019
201381119
201212719
201191019
201013619
200951419
200810919
200751419
200617219
200512618
200411819
200371219
200281220

All 25 seasons are shown in the table above.

Home / Away Split
100-114OAK HOME125-98SEA HOME
AWAY
98-125
OAK
AWAY
114-100
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
31.6%

Share of the 437 decided meetings settled by exactly one run.

Won by 2 or more
68.4%

A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 3.2.

Average total
8.2runs

Final-score average without accounting for park, bullpen or weather.

Home side wins
51.5%

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.

LineOverUnderOver rate
7.5Closest to even230207
52.6%
8.5192245
43.9%
9.5149288
34.1%

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
239 W · 54.7%1.83
Oakland Athletics
198 W · 45.3%2.21

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
40%vs 31.6% full archive
+8.4% in the last 20
Won by 2 or more
60%vs 68.4% full archive
-8.4% in the last 20
Average total
8.4 runsvs 8.2 runs full archive
+0.2 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 Mariners and Athletics in the oddsmatcher.

Questions about this record: Oakland Athletics vs Seattle Mariners

How do recent Oakland Athletics vs Seattle Mariners results compare with the record since 2002?

The latest 10 decided meetings are split 5-5. Seattle Mariners lead the decided record 239-198. The recent window is a subset of the current-feed record since 2002, so the page reports the two separately.

About Erik Andersson

Erik Andersson is SharkBetting's Content & Marketing Specialist. His published work focuses on betting methodology, market analysis, regulation and consumer education.

The source windows, derivations and update process for this data page are documented in the methodology above.

View full profile →

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.

Read the full H2H data methodology →

Last updated Sources: balldontlie, MLB Stats API

Oakland Athletics and Seattle Mariners have met 437 times in this archive, which covers the 2002 season onward.