Seattle Mariners vs Cleveland Guardians Picks and Predictions June 13th 2025

Seattle Mariners vs Cleveland Guardians June 13th 2025

The Cleveland Guardians travel to Seattle to take on the Mariners at T-Mobile Park. The game is set for Friday, June 13, 2025, with a start time of 10:10 PM. Fans can catch the action on RSNW as the teams meet under the retractable roof, which will likely shield them from the mild breeze and overcast skies.

The Guardians, managed by Stephen Vogt, hold a record of 35-32 this season. They are 8 games back in the AL Central. On the other side, the Mariners, led by Dan Wilson, have a 33-34 record and are 4 games back in the AL West. Cleveland’s Gavin Williams, with a 3.86 ERA, will face Seattle’s Luis Castillo, who has a 3.31 ERA. Both teams aim to improve their standings with a win.

Guardians vs Mariners Key Information

• Sport: Baseball
• Teams: Cleveland Guardians vs. Seattle Mariners
• Venue: T-Mobile Park in Seattle, WA
• Date: Friday, June 13, 2025
• Betting Odds: Mariners MoneyLine -131, Guardians MoneyLine +109

The Guardians Can Win If…

The Cleveland Guardians are coming off a strong 11-2 win against the Cincinnati Reds. Logan Allen pitched six innings, allowing only two runs and striking out six batters. Lane Thomas and Carlos Santana led the offense with home runs, contributing to the team’s 13 hits in the game.

Cleveland’s ability to hit home runs and steal bases gives them an edge. They have hit 69 home runs, ranking 15th in the league, and stolen 54 bases, ranking 10th. Their pitching staff has a solid ERA of 3.89, which is 16th in the league, and they have the fewest blown saves with just five.

Key players like José Ramírez and Carlos Santana can make a difference. Ramírez has a batting average of .331 with 12 home runs, while Santana adds power with eight home runs. With Gavin Williams starting on the mound, the Guardians have a reliable pitcher to rely on, with a 3.86 ERA and a 5-3 record this season.

The Mariners Can Win If…

The Seattle Mariners are ready to take on the Cleveland Guardians at home. In their most recent game against the Arizona Diamondbacks, the Mariners lost 2-5. Despite the loss, Julio Rodríguez shined with a 3-for-4 performance, including two doubles.

Seattle’s lineup is strong, with Cal Raleigh leading the team in home runs with 26. The Mariners rank 7th in the league for home runs, showing their power at the plate. Their on-base percentage is 9th in the league, indicating their ability to get on base and create scoring opportunities.

On the mound, Luis Castillo will start for the Mariners. Castillo has a solid ERA of 3.31, which can help keep the Guardians’ offense in check. With a lineup that includes J.P. Crawford and Jorge Polanco, Seattle has the tools to secure a win.

The Lean

The Mariners are favored with a moneyline of -131 against the Guardians, who are at +109. The Mariners have a stronger hitting lineup, ranking 7th in home runs and 9th in on-base percentage. My model projects the Mariners to win with a score of 4-3.

The over/under line is set at 7.0 runs. Both teams have mid-tier pitching, with the Mariners’ ERA ranked 16th and the Guardians’ ranked 20th. My model projects a total of 7 runs, so the recommendation is to take the under.

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Santana’s Return to Seattle Headlines Series Opener

When the Cleveland Guardians visit the Seattle Mariners on Friday night, the story will be centered on a player who could have been in the other dugout. Veteran first baseman Carlos Santana, who chose to sign with Cleveland over Seattle this past offseason, makes his return to the Emerald City.

Still Elite at 39

Santana is not just returning; he’s arriving at the top of his game. The 39-year-old just celebrated the 15th anniversary of his MLB debut by hitting a grand slam in the Guardians’ last game, an 11-2 victory that snapped an offensive slump for the team.

“Fifteen years in the big leagues; it’s ridiculous,” Guardians manager Stephen Vogt said. “It’s hard to keep playing as you get older, and he does it at an elite level still.” For a player with such a long career across multiple MLB teams, it’s a remarkable feat.

Seattle’s Free-Fall

While the Guardians are feeling good after breaking out of their slump, the Mariners are in a free-fall. They have lost eight of their last nine games, dropping below .500 for the first time since April. Their offense has been the primary issue, scoring just 28 runs over that nine-game stretch.

“Baseball just kicks your (rear) sometimes; it’s just kind of how it is,” said Mariners pitcher Bryan Woo. “Nobody feels sorry for us. We’ve got to create our own luck.” The struggles of both offenses are a key factor to consider in our expert betting guide.

A Contrasting Pitching Matchup

Friday’s game features two starters heading in opposite directions. The Guardians will send out right-hander Gavin Williams (5-3, 3.86 ERA), who has been excellent since the start of May with a 2.89 ERA in his last seven starts.

The Mariners will counter with their ace, Luis Castillo (4-4, 3.31 ERA), but he is in a slump. He was hit hard in his last start and hasn’t recorded a win since May 19. To make matters worse, he has a poor 4.98 career ERA against Cleveland. This matchup presents a clear contrast on the scores and odds board.

To see if our experts think Santana will lead his team to a victory in his return to Seattle, check out our daily MLB picks.