Home › MLB › Chicago Cubs vs Seattle Mariners

Chicago Cubs vs Seattle Mariners — 2026-08-21

10:10 PM ETT-Mobile ParkSP: Matthew Boyd vs Emerson HancockMLBFINAL
Recap

Seattle Mariners won 6-5 over Chicago Cubs on 2026-08-21. Our pre-game pick missed. Margin of 1 run.

Model prediction (pre-game)

Chicago Cubs
53%
Seattle Mariners
47%
Projected
Cubs 4.5 - 4.4 Mariners

What our model sees

Our MLB model rates Chicago Cubs as the more likely winner at 53%. The driver is a 43-point Elo gap (1534 vs 1491) reflecting roster strength, recent results, and quality-of-opposition adjustments. Seattle Mariners would need above-baseline variance to flip the script. This page auto-updates with the final score and our recap once the game ends.

Recent form (last 10)

Chicago Cubs
No recent games on file.
Seattle Mariners
No recent games on file.

What we said before the game

Pre-game model: Chicago Cubs 53% / Seattle Mariners 47%. Projected Chicago Cubs 4.5 — 4.4 Seattle Mariners.

Our MLB model rates Chicago Cubs as the more likely winner at 53%. The driver is a 43-point Elo gap (1534 vs 1491) reflecting roster strength, recent results, and quality-of-opposition adjustments. Seattle Mariners would need above-baseline variance to flip the script. This page auto-updates with the final score and our recap once the game ends.

Our model said X. Here's what happened.

Pre-game call: Under 8.0 at -112 at -112. Pre-game: model 56.8% vs market 50.3% implied, a +6.4pp edge.

What happened: Total: 11 (line: under 8).

Bet returned -1.00u on 1u risked.

Get our daily picks in Discord
All sports. Model-backed picks with edge math + analysis. See pricing ->

Signal Labs · model-driven betting analytics. Information shown is for analysis and entertainment only. Must be 21+ to wager where legal. Responsible gambling resources.