It's Friday, August 8 and the Rays (57-59) are in Seattle to take on the Mariners (63-53). Drew Rasmussen is slated to take the mound for Tampa Bay against Luis Castillo for Seattle.
The Mariners are warming up with four consecutive wins and six in the last seven games, while the Rays have won the past two. On a larger scale, Tampa Bay is 7-12 in the last 19 games and struggled in the second half.
On a positive note, the Rays do have a rest advantage here with a day off after the Mariners finished its series versus the White Sox yesterday. Seattle swept Chicago and took the finale 4-3 in extras after winning the previous two meetings by three-plus runs each.
Let's dive into the matchup and find a sweat or two. We’ve got all the info and analysis you need to know ahead of the game, including the latest info on how to catch first pitch, odds, recent team performance, player stats, and of course, our predictions, picks & best bets for the game from our modeling tools and staff of experts.
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Game details & how to watch Rays at Mariners
- Date: Friday, August 8, 2025
- Time: 9:40PM EST
- Site: T-Mobile Park
- City: Seattle, WA
- Network/Streaming: FDSNSUN, RSNW
Never miss a second of the action and stay up-to-date with all the latest team stats and player news. Check out our day-by-day MLB schedule page, along with detailed matchup pages that update live in-game with every out.
Odds for the Rays at the Mariners
The latest odds as of Friday:
- Moneyline: Rays (+110), Mariners (-131)
- Spread: Mariners -1.5
- Total: 7.0 runs
Probable starting pitchers for Rays at Mariners
- Pitching matchup for August 8, 2025: Drew Rasmussen vs. Luis Castillo
- Rays: Drew Rasmussen, (9-5, 2.81 ERA)
Last outing: 0.00 ERA, 0 Earned Runs Allowed, 4 Hits Allowed, 0 Walks, and 6 Strikeouts - Mariners: Luis Castillo, (8-6, 3.22 ERA)
Last outing: 4.15 ERA, 2 Earned Runs Allowed, 4 Hits Allowed, 1 Walks, and 4 Strikeouts
- Rays: Drew Rasmussen, (9-5, 2.81 ERA)
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Expert picks & predictions for tonight’s game between the Rays and the Mariners
Rotoworld Best Bet
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Our model calculates projections around each moneyline, spread and over/under bet for every game on the MLB calendar based on data points like past performance, player matchups, ballpark information and weather forecasts.
Once the model is finished running, we put its projection next to the latest betting lines for the game to arrive at a relative confidence level for each wager.
Here are the best bets our model is projecting for Friday’s game between the Rays and the Mariners:
- Moneyline: NBC Sports Bet is recommending a play on the Seattle Mariners on the Moneyline.
- Spread: NBC Sports Bet is leaning towards a play ATS on the Tampa Bay Rays at +1.5.
- Total: NBC Sports Bet is recommending a play on the over on the Game Total of 7.0.
Want even more MLB best bets and predictions from our expert staff & tools? Check out the Expert MLB Predictions page from NBC.
Top betting trends & insights to know ahead of Rays at Mariners
- Seattle is 4-0 in the last 4 and 6-1 in the past 7
- Tampa Bay is 7-12 since the All-Star break and 2-0 in the last 2
- Tampa Bay is 3-7 in 10 road games since the All-Star break
- With Luis Castillo toeing the rubber betting the Mariners on the Money Line is showing a profit of 1.45 units
- The Mariners pitcher Luis Castillo has an ERA of 3.23 this season
- Against the Run Line this season the Rays are 3-0 when they hold rest advantage over their opponents
If you’re looking for more key trends and stats around the spread, moneyline and total for every single game on the schedule today, check out our MLB Top Trends tool on NBC Sports!
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