Seattle Mariners vs Cleveland Guardians Prediction, Preview and Odds - 08/30/2025

Game Time: 7:15 pm ET, Saturday, August 30, 2025

Venue:  Progressive Field, Cleveland, OH

Where to Watch:  FOX

DraftKings:  Moneyline odds:  Mariners -157, Guardians +128; Over/Under:  7.5 runs

Bet365:  Moneyline odds:  Mariners -155, Guardians +125; Over/Under:  7.5 runs

BetMGM:  Moneyline odds:  Mariners -150, Guardians +125; Over/Under:  7.5 runs

Seattle Mariners:  72-62 (2nd place, AL West)

Cleveland Guardians:  66-66 (3rd place, AL Central)

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Seattle Mariners:  4-6 last 10

Cleveland Guardians:  3-7 last 10

The Mariners are entering this series off a win and won their 3-game series against the San Diego Padres 2-1 in their last series. They enter this game with a 72-62 record overall and have a road record of 31-35. This is the 2nd game of a 3-game series with the Guardians on Saturday with the series opener still to be played on Friday. Their offense ranks 12th in the MLB with a .727 OPS. George Kirby is their starting pitcher on Friday while Logan Gilbert is making his start in this game on Saturday. He is 4-5 with a 3.69 ERA this season. His team lost 2 of their last 3 games this season with him making an appearance. In his last MLB regular season appearance, he allowed 1 ER, 1 HR, and 1 BB with 13 SO on 3 hits through 6 IP against the Athletics.

The Guardians are entering this series off a win and won their 3-game series against the Tampa Bay Rays 2-1 in their last series. They enter this game with a 66-66 record overall and have a home record of 33-32. This is the 2nd game of a 3-game series with the Mariners on Saturday with the 1st game of this series still to be played on Friday. Their offense ranks 29th in the MLB with a .661 OPS. Logan Allen is their starting pitcher on Friday while Gavin Williams is making his start in this game on Saturday. He is 8-5 with a 3.36 ERA this season. His team lost 2 of their last 3 games this season with him making an appearance. In his last MLB regular season start, he allowed 3 earned runs, 1 homer, and 4 walks with 3 strikeouts on 3 hits through 3.1 innings pitched against the Texas Rangers.

The current betting odds have the Mariners listed as a favorite in this game according to Draftkings Sportsbook. The Mariners have looked really good in their games this season with their 72-62 record overall which has them right near the top of the AL West. They haven't been a great road team though with their 31-35 road record this season. Meanwhile, the Guardians haven't looked great in their games this season with their 66-66 record overall which has them right in the middle of the AL Central. They haven't looked great in their own ballpark either with their 33-32 home record this season. Neither team has been hot lately, but the Mariners have been the slightly better team lately as they are 4-6 in their last 10 games while the Guardians are 3-7. The Guardians are going with Williams in this one and he has looked good this season. He is 8-5 with a 3.36 ERA, but lately he has been struggling more. The team has lost 2 of their last 3 games with him starting and he did give up 3 earned runs in his last start too. The Mariners are going with Gilbert in this one and he has looked good this season too. He is 4-5 with a 3.69 ERA and hasn't been giving up many runs lately. His team has lost 2 of their last 3 games with him starting, but he is coming off a good start in which he only gave up 1 earned run. Gilbert is also the more reliable starter of the 2 and the Mariners do have the edge with the better offense since the Guardians have one of the worst offenses in the MLB and haven't been putting up a lot of runs lately either. The best way to place a bet here is on the Mariners to win this game. 

Mariners Guardians Prediction:  Our MLB Pick for Saturday, August 30, 2025 (7:15 pm ET start time) is Mariners 4 Guardians 3.

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Seattle Mariners: 245-213 (-11.6 units) on the moneyline in all games. 110-118 (-16.1 units) on the moneyline in road games. 176-128 (-10.3 units) on the moneyline as a favorite of -110 or higher. 53-35 OVER against AL Central opponents. 

Cleveland Guardians: 48-38 (+6.8 units) on the moneyline against AL West opponents. 41-48 (+11.3 units) on the moneyline as an underdog of +125 to +175. 158-135 (+10.3 units) on the moneyline vs. an AL team with an on base percentage .330 or worse. 21-15 OVER at home against AL West opponents.

Seattle Mariners:  T. Thornton (RP) Sixty Day IL - Achilles. L. Evans (SP) Fifteen Day IL - Elbow. G. Santos (RP) Sixty Day IL - Knee. R. Bliss (2B) Sixty Day IL - Biceps.

Cleveland Guardians:  L. Thomas (CF) Ten Day IL - Foot. W. Brennan (RF) Sixty Day IL - Forearm. A. Walters (RP) Sixty Day IL - Lat. B. Lively (SP) Sixty Day IL - Forearm. J. Means (SP) Sixty Day IL - Elbow. S. Hentges (RP) Sixty Day IL - Shoulder.

“That's why you know that, when you give him some leash, he's going to be able to do the job.” - Dan Wilson after his team’s win against the Padres in their game on Wednesday.

“Nolan’s extremely hard on himself. He works his backside off. He cares so much -- a little too much at times. Nolan and I have had a number of conversations throughout the year, as well as our coaches. I think that homer today, a two-hit game, can really release a lot of pressure. It can really help you relax and realize, ‘As long as I'm within myself, I can do this.’ We all know what Nolan is capable of.” - Stephen Vogt after his team’s win against the Rays in their game on Wednesday.

Randy Arozarena (R) LF

Cal Raleigh (S) C

Julio Rodríguez (R) CF

Josh Naylor (L) 1B

Eugenio Suárez (R) 3B

Jorge Polanco (S) DH

Luke Raley (L) RF

J.P. Crawford (L) SS

Cole Young (L) 2B

Steven Kwan (L) LF

Brayan Rocchio (S) 2B

Kyle Manzardo (L) DH

C.J. Kayfus (L) 1B

Gabriel Arias (R) SS

Nolan Jones (L) RF

Will Wilson (R) 3B

Angel Martínez (S) CF

Austin Hedges (R) C

Batting Average:  Leo Rivas (.283)

Hits:  Julio Rodríguez (144)

Home Runs:  Cal Raleigh (50)

RBI:  Cal Raleigh (107)

Stolen Bases:  Randy Arozarena (24)

Wins:  Bryan Woo (12)

Saves:  Andrés Muñoz (31)

ERA:  Jhonathan Díaz (0.00)

Batting Average:  Dom Nuñez (.286)

Hits:  José Ramírez (137)

Home Runs:  José Ramírez (26)

RBI:  José Ramírez (68)

Stolen Bases:  José Ramírez (36)

Wins:  Tanner Bibee (9)

Saves:  Emmanuel Clase (24)

ERA:  Parker Messick (0.66)

Managers:

Seattle Mariners: Dan Wilson (2nd season)

Cleveland Guardians: Stephen Vogt (2nd season)