Seattle Mariners Lead Athletics 4-2 in Head-to-Head Matchups (2026)

MLB3-3-0 ATS (50%)Updated May 27, 2026

The Athletics are 2-4 against the Seattle Mariners in 2026 in head-to-head matchups, going 3-3-0 ATS (50% cover rate) with -16.77% ROI. Games average 8.7 total points. Closing lines from DraftKings, FanDuel, and BetMGM, graded against official MLB box scores.

See methodology.

Athletics vs Mariners Betting Record — 2026

Against the Spread

3-3-0

Win %

50%

ROI

-16.77%

Units

-1.0

Moneyline

2-4-0

Win %

33.33%

ROI

-22.17%

Units

-1.3

Over Rate

4-2-0

Win %

66.67%

ROI

+24.4%

Units

+1.5

From the Other Side — Mariners vs Athletics

Against the Spread

3-3-0

Win %

50%

ROI

+19.83%

Units

+1.2

Moneyline

4-2-0

Win %

66.67%

ROI

+19.55%

Units

+1.2

Over Rate

4-2-0

Win %

66.67%

ROI

+24.4%

Units

+1.5

Venue Splits

Athletics Home

0-3-0 ATS

0% • -100%

0-3-0 ML (0%)

Mariners Home

0-3-0 ATS

0% • -100%

1-2-0 ML (33.33%)

Scoring Averages

Athletics

3.2

PPG

5.5

allowed

Total

8.7

Avg

games

Mariners

5.5

PPG

3.2

allowed

Recent Matchups (2026)

Date	Matchup	Score	Spread	ATS	ML	O/U
05/272026-05-27	Mariners @ Athletics	L 1-9	-1.5	✗	L	O
05/262026-05-26	Mariners @ Athletics	L 1-4	-1.5	✗	L	U
05/252026-05-25	Mariners @ Athletics	L 2-9	-1.5	✗	L	O
04/222026-04-22	Athletics @ Mariners	L 5-4	-1.5	✓	L	O
04/212026-04-21	Athletics @ Mariners	W 2-5	-1.5	✓	W	U
04/202026-04-20	Athletics @ Mariners	W 4-6	-1.5	✓	W	O

Frequently Asked Questions

What is the Athletics vs Seattle Mariners 2026 record?

The Athletics are 2-4 against the Seattle Mariners in 2026 in head-to-head matchups.

What is the Athletics ATS record vs the Seattle Mariners?

The Athletics are 3-3-0 against the spread vs the Seattle Mariners in 2026 on DraftKings, with -16.77% ROI.

Do Athletics vs Seattle Mariners games go over or under?

Athletics vs Seattle Mariners games average 8.7 total points in 2026. The Over has hit 66.67% of the time.

More Athletics Matchups

vs Astros

vs Angels

vs Rangers

See from Mariners perspective

Head-to-head betting record for Athletics vs Seattle Mariners in the 2026 season on LineTerminal. The Athletics are 2-4 straight up against the Mariners and 3-3-0 against the spread (50% cover rate, -16.77% ROI) on DraftKings. Data sourced from DraftKings closing lines. Updated daily after games are graded. Past performance does not guarantee future results.