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Mariners vs. White Sox prediction: Why Seattle is favored to win Saturday's MLB matchup [5/9/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Seattle Mariners vs Chicago White Sox predictions for MLB Saturday.
The Chicago White Sox and Seattle Mariners are scheduled to meet in MLB action at Rate Field on Saturday, starting at 7:10 PM ET.
Anthony Kay (1-1, 5.70 ERA) will be the starting pitcher for the White Sox, pitting him against Luis Castillo (0-3, 6.29 ERA) for the Mariners.
Based on updated simulations, Dimers' proven MLB model gives the Mariners a slight edge with a 53% win probability over the White Sox.
This article offers further insights into Saturday's Mariners vs. White Sox matchup, including best bets and picks.
Mariners vs. White Sox prediction: Who will win and cover?
Using innovative machine learning and data, we have simulated the result of Saturday's MLB game between the Mariners and White Sox, forming part of our MLB predictions coverage.
Our leading predictive model currently gives the Mariners a 53% chance of beating the White Sox.
According to our model, the White Sox (+1.5) have a 58% chance of covering the run line, while the over/under total of 9.5 runs has a 53% chance of staying under.
Mariners vs. White Sox odds [5/9/2026]
We have researched the best MLB odds in America for this game, which are listed here:
| Bet Type | Mariners | White Sox |
|---|---|---|
| Run Line | -1.5 (+122) | +1.5 (-143) |
| Moneyline | -125 | +114 |
| Total | o9.5 (-105) | u9.5 (-110) |
All odds are correct at the time of publication and are subject to change.
Mariners vs. White Sox picks and best bet
After matching our predictions 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 | White Sox +1.5 | -143 |
| Moneyline | White Sox | +114 |
| Total | Under 9.5 | -110 |
According to our best MLB bets, the top play to make on this game is Under 9.5 total runs.
These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.
Mariners vs. White Sox game-day updates and essential details
Saturday's MLB action between the White Sox and Mariners at Rate Field is scheduled to begin at 7:10 PM ET.
- Who: Seattle Mariners vs. Chicago White Sox
- Date: Saturday, May 9, 2026
- Time: 7:10 PM ET/4:10PM PT
- Venue: Rate Field
Conclusion
We predict the Mariners, with a 53% win probability, will likely beat the White Sox in Saturday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
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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