Mariners vs Rays Prediction and MLB Tips - 9 August 2025
Last updated: Aug 9, 2025, 1:40AM | Published: Aug 7, 2025, 7:50PM
The Seattle Mariners will sqaure off with the Tampa Bay Rays in MLB action at T-Mobile Park on Saturday, beginning at 11:40am AEST.
Luis Castillo (8-6, 3.22 ERA) will be on the bump for the Mariners, while the Rays will counter with Drew Rasmussen (9-5, 2.81 ERA).
This article features Stats Insider's prediction and tips for the Mariners vs Rays game, along with the latest betting odds in Australia.
Who Will Win?
Utilising advanced machine learning and data, Stats Insider has simulated the outcome of Saturday's Seattle vs Tampa Bay MLB match-up 10,000 times.
Our leading predictive analytics model gives the Mariners a 56% chance of beating the Rays at T-Mobile Park.
Mariners vs Rays: Odds
The latest betting odds in Australia for Saturday's MLB game at T-Mobile Park are listed here:
- Head to Head: Mariners $1.77, Rays $2.10
- Line: Mariners -1.5 ($2.65), Rays +1.5 ($1.50)
- Total (Over/Under 7 Runs): Over $1.91, Under $1.91
Odds are correct at the time of publication and subject to change.
Looking at the latest head-to-head odds, the bookmakers currently have the Mariners at $1.77 and the Rays at $2.10.
The Mariners are listed as 1.5-run favourites against the Rays, with odds of $2.65 available at TAB.
For the underdog Rays (+1.5) to cover the line, TAB offers odds of $1.50.
The over/under for total runs scored is set at 7 with TAB, which has odds of $1.91 for the over and $1.91 for the under.
According to Stats Insider's model, the Rays (+1.5) are predicted to cover the line 63% of the time, while the 7-run over/under is expected to go over 52% of the time.
Mariners vs Rays: Best Bets
- Head to Head: Seattle at $1.77 with TAB
- Line: Mariners -1.5 at $2.65 with TAB
- Total Runs: Over 7 at $1.91 with TAB
These Mariners vs Rays predictions are based on world-class simulations and betting expertise to help you place more informed bets with your chosen online bookie.
Even though the Rays are more likely to cover the line, our best bet of Mariners -1.5 is based on the chance of that happening, as projected by our predictive analytics model, and the best odds available.
Mariners vs Rays: Prediction
Stats Insider provides full betting coverage of the Seattle vs Tampa Bay game on Saturday, including data-driven predictions and free betting tips.
Our model updates frequently, so refresh this page for the latest betting tips before the Seattle vs Tampa Bay match-up.
As always, see Stats Insider's Best Bets to get betting tips on every MLB game, plus predictions for a wide range of other sports.
Mariners vs Rays: Essential Details
The match-up between the Mariners and Rays at T-Mobile Park is scheduled to start at 11:40am AEST on Saturday.
- Teams: Seattle Mariners vs Tampa Bay Rays
- Date: Saturday 9 August 2025
- Time: 11:40am AEST
- Venue: T-Mobile Park
All dates and times mentioned in this article are in Australian Eastern Standard Time (AEST), unless otherwise stated.
Conclusion
Our Seattle vs Tampa Bay predictions have been made thanks to 10,000 data-driven simulations of the game, all curated by our team of skilled data scientists and analysts. We use cutting-edge technology and machine learning to ensure our MLB tips are accurate and reliable, giving you the knowledge you need to make informed decisions with confidence.
If you decide to use our MLB predictions for betting purposes, it's crucial that you gamble responsibly and keep track of your money. For free and confidential support, call 1800 858 858 or visit gamblinghelponline.org.au.
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