May 29, 2026
Brewers vs. Astros prediction: Houston favored to win Friday's MLB matchup [5/29/2026]
Read Article Diamondbacks vs. Mariners prediction: Seattle favored to win Friday's MLB matchup [5/29/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Arizona Diamondbacks vs Seattle Mariners predictions for MLB Friday.
The Seattle Mariners will square off with the Arizona Diamondbacks in MLB action at T-Mobile Park on Friday, beginning at 10:10 PM ET.
The Mariners will start George Kirby (5-4, 3.54 ERA), while the Diamondbacks are going with Zac Gallen (3-4, 4.80 ERA).
Based on updated simulation results, Dimers' proven MLB model predicts the Mariners as the most likely winner of the Diamondbacks vs. Mariners game.
This article offers a closer look at Friday's matchup, including best bets and picks.
Diamondbacks vs. Mariners prediction: Who will win and cover?
Using innovative machine learning and data analysis, we have simulated the outcome of Friday's MLB matchup between the Diamondbacks and Mariners, forming part of our MLB predictions coverage.
Our famous predictive model currently gives the Mariners a 58% chance of beating the Diamondbacks.
According to our model, the Diamondbacks (+1.5) have a 61% chance of covering the run line, while the 7-run over/under has a 55% chance of going over.
Diamondbacks vs. Mariners odds [5/29/2026]
We have researched the best MLB odds in America for this game, which are listed here:
| Bet Type | Diamondbacks | Mariners |
|---|---|---|
| Run Line | +1.5 (-172) | -1.5 (+155) |
| Moneyline | +128 | -144 |
| Total | o7 (-120) | u7 (+100) |
All odds are correct at the time of publication and are subject to change.
Diamondbacks vs. Mariners picks and best bet
After matching our probabilities against the best current odds, we can reveal our picks for each of the major markets. Plus, find our best bet for the game below:
| Bet Type | Pick | Bet Now |
|---|---|---|
| Run Line | Mariners -1.5 | +155 |
| Moneyline | Diamondbacks | +128 |
| Total | Over 7 | -120 |
According to our best MLB bets, the top play to make on this game is Over 7 total runs.
These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.
Diamondbacks vs. Mariners game-day updates and essential details
Friday's MLB matchup between the Mariners and Diamondbacks at T-Mobile Park is scheduled to commence at 10:10 PM ET.
- Who: Arizona Diamondbacks vs. Seattle Mariners
- Date: Friday, May 29, 2026
- Time: 10:10 PM ET/7:10PM PT
- Venue: T-Mobile Park
Conclusion
We predict the Mariners, with a 58% win probability, will likely beat the Diamondbacks in Friday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
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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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