Seattle Mariners vs Colorado Rockies: MLB Prediction, Pick & Odds — Sep 20, 2026

SEA

41-41

PregameSun, 3:10 PM EDT

COL

32-49

Verdict

Pass · no edge tonight.

The model doesn't see daylight against the posted line on this game. We don't surface negative-EV picks; check the drill-down for sub-model context.

Why this matchup

1 signal · model + market

Park factor

115 total idx

Coors Field run environment

Park factor boosts run scoring, so contact quality matters more tonight here.

Coors Field · Denver, Colorado

Drill down

Sub-model tables · ensemble breakdown · last meeting · book shop · player props

Pregame · scouting report

The matchup, end-to-end.

Probable starters, projected lineups, head-to-head this season, our model edge against the market — every angle on one surface.

Away starter

TBD

Probable starter not yet announced. ESPN typically posts the card 12–24 hours before first pitch.

Home starter

TBD

Probable starter not yet announced. ESPN typically posts the card 12–24 hours before first pitch.

Vegas line

Lines post once a sportsbook releases them.

Model edge

Our model rates this game once both starters are confirmed.

Head to head

SeriesSeries tied 1-1

TypePreseason Series

Model ensemble · how the prediction is built

3 sub-models, blended.

Each sub-model uses a different rating substrate. Bayesian model averaging weights them by rolling Brier score so the ensemble inherits each model's strengths. Disagreement flags games where the sub-models don't see eye-to-eye — lower confidence, wider band.

49.5%

ensemble · SEA favored

Elo Static
fallback · inputs missing
50.0%
P(COL win)
34%
weight
Elo Pitching
fallback · inputs missing
50.0%
P(COL win)
32%
weight
Bullpen Park
fallback · inputs missing
50.0%
P(COL win)
34%
weight

Disagreement

0.00 pp

weighted σ across sub-models

Confidence

100% · high

maps from disagreement

Substrate count

0 / 3 active

ones with full inputs tonight

Weights recalibrated nightly on a 90-day rolling window with strict point-in-time correctness — no model gets credit for a game it hasn't seen. Headline % is Platt-scaled per league; sub-model rows show raw BMA inputs.

Player projections

COL vs SEA.

Per-player stat projections built from a recency-weighted blend of the last ten games, season average, and matchup context. Confidence reflects sample size and stability — the top of each list is who to watch.

128

projections · 95 high confidence

Strikeouts

Bryce MillerSEA
6.7± 3.4low
Logan GilbertSEA
6.4± 2.4medium
Bryan WooSEA
6.2± 3.1medium

Hits

Jake McCarthyCOL
1.2± 0.8high
TJ RumfieldCOL
1.2± 0.7high
Willi CastroCOL
1.2± 1.3high

Total bases

TJ RumfieldCOL
2.4± 2.2high
Willi CastroCOL
2.1± 2.9high
Hunter GoodmanCOL
2.0± 3.7high

RBIs

TJ RumfieldCOL
0.9± 1.0high
Willi CastroCOL
0.9± 2.2high
Cole CarriggCOL
0.7± 2.0low

Earned runs

Kyle FreelandCOL
4.7± 2.2medium
Michael LorenzenCOL
3.9± 2.8medium
Sean SullivanCOL
3.7± 5.5low

Projections recompute every 30 minutes · prop lines plug in once sportsbook ingest lands

Matchup · 2026

Team rate stats vs league

MLB Stats API

SEA

league avg

COL

.695

OPS

.718

▶

.731

.311

OBP

.319

▶

.323

4.02

Runs / G

4.50

▶

4.50

3.68

Team ERA

◀

4.17

5.51

1.19

WHIP

◀

1.31

1.52

8.9

K / 9

◀

8.5

7.3

Data via ESPN · MLB Stats API · Baseball Savant

Seattle Mariners at Colorado Rockies

The matchup, end-to-end.

3 sub-models, blended.

COL vs SEA.

Team rate stats vs league

3 sub-models, blended.