Seattle Mariners vs St. Louis Cardinals H2H Record

Interleague
Seattle Mariners
St. Louis Cardinals
Mariners lead Cardinals17to13since 2002

Current-feed record from 2002 through 2026.

2026 season series: Mariners lead 3-0

By

Data updated 4 min read

At a glance

Current-feed analysis, 2002 to 2026

Seattle Mariners vs St. Louis Cardinals insights

Current-feed record
+4wins for Mariners
57% Mariners · 43% Cardinals

Mariners have pulled further ahead since 2023: 10-2.

Recent form
14-6last 20
Mariners on a 7-game streak

Mariners won 3-2 on Apr 26, 2026

Where it matters
0Postseason games

No postseason meetings since 2002.

Schedule context
  • Mariners built the series lead before the 2023 schedule change, taking 7 of 18 decided meetings (39%).
  • Since the schedule balanced out they are 10-2, or 83% to Mariners.

Mariners vs Cardinals interleague history by season

Seattle Mariners and St. Louis Cardinals met in 10 seasons inside the current feed. Interleague scheduling makes meeting frequency uneven, so the season table matters more than a raw average.

Active seasons
10
With at least one meeting since 2002
Busiest season
2026
3 meetings
Per active season
3.0
Uneven interleague cadence
Win Percentage
17W
13W
SEA
STL
57%43%
Seattle MarinersSt. Louis Cardinals

Recent Games

Last 10 Games
Apr 26
STL 2-3 SEA
SEA
Apr 25
STL 9-11 SEA
SEA
Apr 24
STL 2-3 SEA
SEA
Sep 10
SEA 4-2 STL
SEA
Sep 9
SEA 5-3 STL
SEA
Sep 8
SEA 4-2 STL
SEA
Sep 8
STL 4-10 SEA
SEA
Sep 7
STL 2-0 SEA
STL
Sep 6
STL 1-6 SEA
SEA
Apr 23
SEA 3-7 STL
STL
Last Meeting
Apr 26, 2026Final
STL
2
HOME
SEA
3
AWAY
Marinerswon by1run
Mariners' 7th straight in this series·Game 30 since 2002
Streaks & Momentum
Current Streak
Seattle Mariners: 7 consecutive wins
7
Avg. Margin of Victory
Games decided by 3.4 runs on average
3.4runs
Momentum (Last 10 vs Archive since 2002)
SEA↑Trending Up
Last 1080%
Archive since 200256.7%
STL↓Trending Down
Last 1020%
Archive since 200243.3%
Last 10 Results
SEA / STL

Record since 2002

Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season30 games
17
13
No postseason meetings appear since 2002.
Seattle Mariners Biggest Win
10–0+10 runs
Jun 10, 2002
St. Louis Cardinals Biggest Win
12–2+10 runs
Sep 15, 2013
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
Season ↓SEA ↕STL ↕Games ↕
2026303
2025303
2024213
2023213
2019123
2016213
2013123
2010123
2004033
2002213
Home / Away Split
10-5SEA HOME8-7STL HOME
AWAY
7-8
SEA
AWAY
5-10
STL

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: 30 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
33.3%

Share of the 30 decided meetings settled by exactly one run.

Won by 2 or more
66.7%

A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 3.4.

Average total
8.4runs

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

Home side wins
60%

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 even1515
50%
8.51416
46.7%
9.5921
30%

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
17 W · 56.7%1.76
St. Louis Cardinals
13 W · 43.3%2.31

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
35%vs 33.3% full archive
+1.7% in the last 20
Won by 2 or more
65%vs 66.7% full archive
-1.7% in the last 20
Average total
8.8 runsvs 8.4 runs full archive
+0.4 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 Cardinals in the oddsmatcher.

Questions about this record: Seattle Mariners vs St. Louis Cardinals

How do recent Seattle Mariners vs St. Louis Cardinals results compare with the record since 2002?

Seattle Mariners have won 8 of the latest 10 decided meetings. Seattle Mariners lead the decided record 17-13. 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

Seattle Mariners and St. Louis Cardinals have met 30 times in this archive, which covers the 2002 season onward.