Current-feed record
+5wins for Mariners
55% Mariners · 45% Rockies
Mariners have pulled further ahead since 2023: 10-2.
Colorado Rockies vs Seattle Mariners All-Time Record
Interleague
Colorado Rockies
Seattle Mariners
Mariners lead Rockies36to27since 1997
Retrosheet history through 2025, plus 3 final games from the current feed.
2026 season series: Mariners lead 2-1
Data updated 5 min read
At a glance
All-time since 1997 · current-feed analysis, 2002 to 2026
Colorado Rockies vs Seattle Mariners insights
Recent form
7-13last 20
Mariners won 2-1 on Sep 20, 2026
Where it matters
0Postseason games
No postseason meetings since 2002.
Schedule context
- Mariners built the series lead before the 2023 schedule change, taking 16 of 35 decided meetings (46%).
- Since the schedule balanced out they are 10-2, or 83% to Mariners.
Rockies vs Mariners complete all-time series record
Colorado Rockies and Seattle Mariners have met 63 times since 1997, never in the postseason. 16 meetings predate the current feed, which adds game-level detail from 2002.
- History span
- 1997 to 2026
- First and latest meeting
- Before 2002
- 16
- Meetings from the Retrosheet game logs
- Since 2002
- 47
- Meetings with game-level detail below
Win Percentage
21W
26W
COL
SEA
45%55%
Colorado RockiesSeattle Mariners
Recent Games
Last 10 Games
Sep 20
COL 1-2 SEA
SEASep 19
COL 5-3 SEA
COLSep 18
COL 4-5 SEA
SEASep 25
SEA 6-2 COL
SEASep 24
SEA 9-2 COL
SEASep 23
SEA 4-3 COL
SEAApr 21
COL 2-1 SEA
COLApr 21
COL 2-10 SEA
SEAApr 20
COL 0-7 SEA
SEAApr 16
SEA 1-0 COL
SEA| Date | Home | Away | Score | Result |
|---|---|---|---|---|
| Sep 20, 2026 | COL | SEA | 1–2 | SEA |
| Sep 19, 2026 | COL | SEA | 5–3 | COL |
| Sep 18, 2026 | COL | SEA | 4–5 | SEA |
| Sep 25, 2025 | SEA | COL | 6–2 | SEA |
| Sep 24, 2025 | SEA | COL | 9–2 | SEA |
| Sep 23, 2025 | SEA | COL | 4–3 | SEA |
| Apr 21, 2024 | COL | SEA | 2–1 | COL |
| Apr 21, 2024 | COL | SEA | 2–10 | SEA |
| Apr 20, 2024 | COL | SEA | 0–7 | SEA |
| Apr 16, 2023 | SEA | COL | 1–0 | SEA |
Last Meeting
Sep 20, 2026Final
COL
1
HOME
SEA
2
AWAY
Marinerswon by1run
Snapped Rockies' streak·Game 47 since 2002
Streaks & Momentum
Current Streak
Seattle Mariners won the most recent meeting
1
Avg. Margin of Victory
Games decided by 3.2 runs on average
3.2runs
Momentum (Last 10 vs Archive since 2002)
COL↓Trending Down
Last 1020%
Archive since 200244.7%
SEA↑Trending Up
Last 1080%
Archive since 200255.3%
Last 10 Results
COL / SEA
Record since 2002
Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season47 games
21
26
No postseason meetings appear since 2002.
Colorado Rockies Biggest Win
7–1+6 runs
Jun 14, 2009
Seattle Mariners Biggest Win
10–2+8 runs
Apr 21, 2024
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
| Season ↓ | COL ↕ | SEA ↕ | Games ↕ |
|---|---|---|---|
| 2026 | 1 | 2 | 3 |
| 2025 | 0 | 3 | 3 |
| 2024 | 1 | 2 | 3 |
| 2023 | 0 | 3 | 3 |
| 2021 | 2 | 2 | 4 |
| 2020 | 2 | 1 | 3 |
| 2018 | 5 | 1 | 6 |
| 2017 | 1 | 3 | 4 |
| 2015 | 3 | 3 | 6 |
| 2012 | 0 | 3 | 3 |
| 2009 | 3 | 0 | 3 |
| 2006 | 2 | 1 | 3 |
| 2002 | 1 | 2 | 3 |
All 13 seasons are shown in the table above.
Home / Away Split
AWAY
11-14
COL
AWAY
12-10
SEA
Retrosheet archiveComplete through 2025
Colorado Rockies vs Seattle Mariners all-time record, 1997 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
- 60
- Peak inning
- EX
- Record game
- 27 runs
Two source windows. Current-feed sections: 47 games from 2002 to 2026. History Lab: 60 Retrosheet games from 1997 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.
COLSEA
Scoring by inning
Runs per 100 batting innings, adjusted for unequal ninth and extra innings.
COLSEA
36.7
196.7
55.0
265.0
50.0
338.3
41.7
471.7
61.7
556.7
55.0
673.3
55.0
761.7
36.7
836.7
37.3
922.5
120.0
EX40.0
- COL after scoring first
- 62.5%
- SEA after scoring first
- 69.4%
- Lead-change games
- 40.0%
- Beyond nine innings
- 3
The games at the edges
Verified single-game records from the historical matchup log.
Highest total
27 runs
COL 16, SEA 11
Jun 9, 1999
Biggest margin
8 runs
COL 2, SEA 10
Apr 21, 2024
Longest game
11 innings
SEA 3, COL 4
Jul 2, 2006
Largest crowd
55,980
SEA 6, COL 1
Jun 13, 1997
Colorado Rockies largest comeback
3-run deficit
COL 6, SEA 4
Jun 12, 2009
Seattle Mariners largest comeback
6-run deficit
SEA 12, COL 11
Jun 12, 1997
Full archive stat line
Counting stats across games with complete team totals.
MetricCOLSEA
Hits509539
Home runs6185
Walks175210
Strikeouts444432
Errors3636
Where the rivalry lived
- 0128games
Safeco Field
Seattle, WA
- 0227games
Coors Field
Denver, CO
- 035games
Kingdome
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.
Small sample: 47 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
27.7%
Share of the 47 decided meetings settled by exactly one run.
Won by 2 or more
72.3%
A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 3.2.
Average total
8.4runs
Final-score average without accounting for park, bullpen or weather.
Home side wins
51.1%
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 |
|---|---|---|---|
| 7.5 | 29 | 18 | 61.7% |
| 8.5Closest to even | 21 | 26 | 44.7% |
| 9.5 | 16 | 31 | 34% |
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
26 W · 55.3%1.81
Colorado Rockies
21 W · 44.7%2.24
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 27.7% full archive
+7.3% in the last 20
Won by 2 or more
65%vs 72.3% full archive
-7.3% in the last 20
Average total
7.5 runsvs 8.4 runs full archive
-0.9 runs in the last 20
Seasons 2018 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 Rockies in the oddsmatcher.
Questions about this record: Colorado Rockies vs Seattle Mariners
How do recent Colorado Rockies vs Seattle Mariners results compare with the complete record?
Seattle Mariners have won 8 of the latest 10 decided meetings. Seattle Mariners lead the decided record 36-27. The recent window is a subset of the complete series from 1997 through 2026, so the page reports the two separately.
When did the Colorado Rockies and Seattle Mariners first play each other?
The Retrosheet archive's first recorded meeting for this pairing is Jun 12, 1997, when Seattle Mariners beat Colorado Rockies 12-11 at home. The archive covers 60 meetings from 1997 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
Colorado Rockies and Seattle Mariners have met 47 times in this archive, which covers the 2002 season onward.