Guardians at Mariners Prediction: Odds, expert picks, starting pitchers, betting trends, and stats for June 13
It's Friday, June 13, and the Guardians (35-32) are in Seattle to take on the Mariners (33-34). Gavin Williams is slated to take the mound for Cleveland against Luis Castillo for Seattle.
Today is the first matchup between the two teams, with Seattle coming off a tough stretch. After being swept by the Arizona Diamondbacks, the Mariners were outscored 23-9 in the three-game series.
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Despite holding second place in the AL West, the Mariners have hit a rough patch, losing eight of their last 10 games.
However, there's hope that they can turn things around against a Guardians squad that's also been struggling.
Cleveland has dropped six of their last 10 games and is currently in the midst of a three-series losing streak.
With both teams looking to get back on track, today's game could be a pivotal moment for either side.
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 tipoff, 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 Guardians at Mariners
Date: Friday, June 13, 2025
Time: 10:10PM EST
Site: T-Mobile Park
City: Seattle, WA
Network/Streaming: ROOTNW, Guardians TV
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 Guardians at the Mariners
The latest odds as of Friday:
Moneyline: Guardians (-104), Mariners (-115)
Spread: Mariners -1.5
Total: 7.0 runs
Probable starting pitchers for Guardians at Mariners
Pitching matchup for June 13, 2025: Gavin Williams vs. Luis Castillo
Guardians: Gavin Williams, (5-3, 3.86 ERA)
Last outing (Houston Astros, 6/7): 6.0 Innings Pitched, 3 Earned Runs Allowed, 5 Hits Allowed, 2 Walks, and 5 Strikeouts Mariners: Luis Castillo, (4-4, 3.31 ERA)
Last outing (Los Angeles Angels, 6/7): 5.0 Innings Pitched, 4 Earned Runs Allowed, 8 Hits Allowed, 0 Walks, and 5 Strikeouts
Rotoworld still has you covered with all the latest MLB player news for all 30 teams. Check out the feed page right here on NBC Sports for headlines, injuries, and transactions where you can filter by league, team, positions, and news type!
Top betting trends & insights to know ahead of Guardians at Mariners
The Guardians have won 5 of their last 6 games at the Mariners
This season the Mariners pitcher Luis Castillo has an ERA of 3.32
The Mariners have failed to cover the Run Line in 17 of their last 20 games
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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!
Expert picks & predictions for tonight's game between the Guardians 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.
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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 Guardians and the Mariners:
Moneyline: NBC Sports Bet is recommending a play on the Cleveland Guardians on the Moneyline.
Spread: NBC Sports Bet is leaning towards a play ATS on the Cleveland Guardians 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
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