The Mariners and Guardians open a weekend three‑game set tonight in Cleveland. The Guardians are home after salvaging the final game of their three-game series against the White Sox. Cleveland won, 4-3, in ten innings last night. Cade Smith gave up solo home runs to B Montgomery and Randal Grichuk to blow a 3-1 lead last night but Cleveland prevailed in the tenth thanks to a Kahlil Watson single that scored Petey Halpin. The Mariners dropped their second straight in Pittsburgh last night. Bubba Chandler was elusive last night, limiting the Mariners to one run over 5.1 innings despite giving up five hits and walking three hitters. Seattle was 1-10 with runners in scoring position as they fell back to .500 for the season (41-41). The Mariners have scored three or fewer runs in 11 straight games.
It is not surprising that the season series between Seattle and Cleveland is tied 2–2 heading into tonight’s matchup. Both teams have shown similar statistical profiles on the mound and at the plate. Seattle owns a .231 team batting average with 100 home runs, while Cleveland sits at .228 with 75 homers. Seattle carries a 3.71 ERA (5th in MLB), and Cleveland follows closely with a 3.79 ERA (6th).
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Tonight’s pitching matchup features Luis Castillo for Seattle and Joey Cantillo for Cleveland. Castillo enters at 2–6 with a 5.22 ERA, 69 strikeouts, and a 1.40 WHIP across 70.2 innings. Cantillo’s season has been far more positive with an overall record of 6–3, a 4.05 ERA, 76 strikeouts, and an identical 1.40 WHIP over 80 innings.
Seattle’s hottest hitter over the last week plus is Dominic Canzone. The fact he is considered a hot hitter despite going just 8‑for‑30 in his last 10 games is a testament to just how bad Seattle has been at the plate. Julio Rodríguez is 3-9 over the last two games but is hitting a mere .198 in June. Cleveland’s Travis Bazzana is 11‑for‑36 with two doubles, three home runs, and seven RBI over his last 10 games.
Lets dive into tonight’s 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 the 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 and How to Watch: Mariners vs. Guardians
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Date: Friday, June 26, 2026
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Network/Streaming: MLB.TV, Mariners.TV, CLEGuardians.TV
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The Latest Odds: Mariners vs. Guardians
The latest odds as of Friday courtesy of DraftKings:
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Spread: Mariners -1.5 (+153), Guardians +1.5 (-187)
Probable Starting Pitchers and their Stats: Mariners vs. Guardians for June 26
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Mariners: Luis Castillo
Season Totals: 70.2 IP, 2-6, 5.22 ERA, 1.40 WHIP, 69K, 25 BB -
Guardians: Joey Cantillo
Season Totals: 80.0 IP, 6-3, 4.05 ERA, 1.40 WHIP, 76K, 37 BB
Who’s Hot? Who’s Not! Mariners vs. Guardians
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Josh Naylor picked up at least 1 hit in each of the 3 games against Pittsburgh (5-11)
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Brayan Rocchio was 4-14 in the 3 games against the White Sox earlier this week
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Rocchio is 9-30 over his last 7 games
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Steven Kwan was 3-8 against the White Sox the past 2 games after going hitless in his previous 4 games (0-8)
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Top Betting Trends & Insights: Mariners vs. Guardians
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The Mariners are an MLB-worst 31-51 on the Run Line this season
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The Guardians are 43-38 on the Run Line this season
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The OVER has cashed 39 times in Cleveland’s 81 games this season (39-42)
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The OVER has cashed 39 times in the Mariners’ 82 games this season (39-40-3)
Expert picks & predictions: Mariners vs. Guardians
Rotoworld Bet 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.
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Here are the best bets our model is projecting for today’s game between the Mariners and the Guardians:
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Moneyline: Rotoworld Bet is recommending a play on the Guardians on the Moneyline.
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Spread: Rotoworld Bet is staying away from a play on the Run Line.
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Total: Rotoworld Bet is leaning towards a play on the Game Total OVER 7.5.
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Jay Croucher (@croucherJD)
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