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Colts vs. Seahawks prediction: Seattle favored to win in NFL Week 15 [2025]

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Written by Jason Bevilacqua

Get Indianapolis Colts vs Seattle Seahawks predictions for NFL Sunday.

Indianapolis Colts-Seattle Seahawks Predictions and Game Preview.
Indianapolis Colts vs. Seattle Seahawks NFL prediction for Sunday, December 14, 2025.

The Seattle Seahawks and Indianapolis Colts are scheduled to meet in Week 15 of the NFL season at Lumen Field on Sunday, starting at 4:25PM ET.

Based on the latest simulation results, Dimers' proven NFL model projects the Seahawks as the most likely winner of the Colts vs. Seahawks game.

This article offers further insights into this week's matchup, including projected touchdown scorers, best bets and player prop picks.

Colts vs. Seahawks prediction: Who will win and cover?

Since our Colts-Seahawks predictions earlier in the week, we have simulated the outcome of Sunday's NFL game between the Colts and Seahawks 10,000 times as part of our NFL predictions coverage.

Our famous predictive model gives the Seahawks an 89% chance of defeating the Colts in Week 15 of the NFL season. Our predicted final score has the Seahawks winning 27-14.

According to our model, the Colts (+13.5) have a 54% chance of covering the spread, while the over/under total of 41.5 points has a 54% chance of going over.

 

To see win probabilities for every matchup this week, check out our expert NFL Week 15 straight up picks.

Colts vs. Seahawks odds

We have researched the best NFL odds in America for this game, which are listed here:

Bet Type Colts Seahawks
Spread +13.5 (-102) -13.5 (-120)
Moneyline +810 -1100
Total o41.5 (-110) u41.5 (-108)

All odds are correct at the time of publication and are subject to change.

Colts vs. Seahawks picks and best bet

After matching our predictions against the best available odds, we can reveal our picks for each of the major markets. Plus, find our best bet for the game below:

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Written by
Jason Bevilacqua
Head of Content and Communities

Jason Bevilacqua, an expert in MLB, NHL, NBA, MLS, and NFL, delivers game previews, best bets, and props. Since 2020, as Head of Social and Community at Dimers, he has contributed insightful articles utilizing data-driven models and simulations.

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