Mariners vs Guardians Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 30

Odds updated as of 7:16 p.m.

The Seattle Mariners are among the MLB teams playing on Saturday, up against the Cleveland Guardians.

Before you do any MLB betting on this matchup at FanDuel Sportsbook, here's everything you need to know.

Mariners vs Guardians Game Info

• Seattle Mariners (72-63) vs. Cleveland Guardians (67-66)
• Date: Saturday, August 30, 2025
• Time: 7:15 p.m. ET
• Venue: Progressive Field -- Cleveland, Ohio
• Coverage: FOX

Mariners vs Guardians Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-154) | CLE: (+130)
• Spread: SEA: -1.5 (+110) | CLE: +1.5 (-132)
• Total: 7.5 -- Over: (+104) | Under: (-128)

Mariners vs Guardians Probable Starting Pitchers

Probable Pitchers: Logan Gilbert (Mariners) - 4-5, 3.69 ERA vs Gavin Williams (Guardians) - 8-5, 3.36 ERA

The probable pitchers are Logan Gilbert (4-5) for the Mariners and Gavin Williams (8-5) for the Guardians. Gilbert and his team are 6-12-0 ATS this season when he starts. Gilbert's team has won 73.3% of his starts when they are favored on the moneyline (11-4). The Guardians have an 11-15-0 record against the spread in Williams' starts. The Guardians have been the moneyline underdog in 16 of Williams' starts this season, and they went 6-10 in those matchups.

Mariners vs Guardians Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (53.8%)

Mariners vs Guardians Moneyline

• Looking at the moneyline for Mariners-Guardians, Seattle is the favorite at -154, and Cleveland is +130 playing at home.

Mariners vs Guardians Spread

• The Guardians are +1.5 on the run line against the Mariners. The Guardians are -132 to cover, and the Mariners are +110.

Mariners vs Guardians Over/Under

• A combined run total of 7.5 has been set for Mariners-Guardians on Aug. 30, with the over at +104 and the under at -128.

Bet on Seattle Mariners vs. Cleveland Guardians on FanDuel today!

Mariners vs Guardians Betting Trends

• The Mariners have been chosen as favorites in 90 games this year and have walked away with the win 51 times (56.7%) in those games.
• Seattle has a record of 21-12 in contests when sportsbooks favor them by -154 or more on the moneyline.
• The Mariners and their opponents have gone over in 69 of their 130 games with a total set by sportsbooks this season.
• In 130 games with a line this season, the Mariners have a mark of 55-75-0 against the spread.
• The Guardians have been the underdog on the moneyline 73 total times this season. They've finished 31-42 in those games.
• Cleveland has gone 11-14 in games it has played as a moneyline underdog with odds of +130 or longer (44%).
• The Guardians have played in 130 games with a set over/under, and have combined with opponents to go over the total 59 times (59-66-5).
• The Guardians have collected a 68-62-0 record ATS this season (covering 52.3% of the time).

Mariners Player Leaders

• Cal Raleigh leads Seattle with 120 hits and an OBP of .354 this season. He has a .243 batting average and a slugging percentage of .586.
• Among qualifying hitters, he is 117th in batting average, his on-base percentage ranks 32nd, and he is third in slugging.
• Julio Rodriguez has hit 25 homers this season while driving in 74 runs. He's batting .263 this season and slugging .457 with an on-base percentage of .316.
• Among qualified hitters, his batting average ranks him 65th, his on-base percentage 103rd, and his slugging percentage 56th.
• Rodriguez has picked up at least one hit in five straight games. In his last five games he is hitting .368 with two walks and three RBIs.
• Eugenio Suarez has 114 hits this season and has a slash line of .237/.309/.547.
• Suarez enters this game with three games in a row with at least one hit. During his last five outings he is batting .250 with two home runs, four walks and seven RBIs.
• Josh Naylor has been key for Seattle with 131 hits, an OBP of .350 plus a slugging percentage of .448.
• Naylor brings a seven-game hitting streak into this game. In his last 10 outings he is batting .286 with two doubles, a home run, two walks and four RBIs.

Guardians Player Leaders

• Jose Ramirez has put up a team-best OBP (.359) and slugging percentage (.505), and paces the Guardians in hits (138, while batting .285).
• Including all the qualified hitters in the majors, he is 20th in batting average, 26th in on-base percentage and 17th in slugging percentage.
• Steven Kwan has 22 doubles, a triple, 10 home runs and 45 walks while hitting .271. He's slugging .377 with an on-base percentage of .330.
• Including all qualified players, he is 42nd in batting average, 77th in on-base percentage and 132nd in slugging percentage.
• Kyle Manzardo has 14 doubles, two triples, 22 home runs and 41 walks while hitting .235.
• Angel Martinez has 21 doubles, a triple, 10 home runs and 16 walks while hitting .226.

Mariners vs Guardians Head to Head

• 8/29/2025: 5-4 CLE (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 6/15/2025: 6-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -124, Underdog Moneyline: +106)
• 6/14/2025: 4-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 6/13/2025: 7-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 6/20/2024: 6-3 CLE (Favorite: Guardians, Spread: -1.5, Total: 8, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 6/19/2024: 8-0 CLE (Favorite: Guardians, Spread: -1.5, Total: 7.5, Favorite Moneyline: -156, Underdog Moneyline: +132)
• 6/18/2024: 8-5 SEA (Favorite: Guardians, Spread: -1.5, Total: 8.5, Favorite Moneyline: -134, Underdog Moneyline: +114)
• 4/3/2024: 8-0 CLE (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 4/2/2024: 5-2 CLE (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 4/1/2024: 5-4 SEA (Favorite: Guardians, Spread: -1.5, Total: 7.5, Favorite Moneyline: -112, Underdog Moneyline: -104)

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