Seattle Mariners vs Houston Astros Prediction, Preview and Odds - 08/14/2026

Game Time: 8:10 pm ET, Friday, August 14, 2026

Venue:  Daikin Park, Houston, TX

Where to Watch:  MLB TV

DraftKings:  Moneyline odds:  Mariners +109, Astros -131; Over/Under:  8 runs

Bet365:  Moneyline odds:  Mariners +110, Astros -130; Over/Under:  8 runs

BetMGM:  Moneyline odds:  Mariners +110, Astros -135; Over/Under:  8 runs

Seattle Mariners:  57-65 (3rd place, AL West)

Houston Astros:  62-60 (1st place, AL West)

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Seattle Mariners:  3-7 last 10

Houston Astros:  5-5 last 10

The Mariners are entering this series off a win and lost their 3-game series against the New York Yankees 2-1 in their last series. They enter this game with a 57-65 record overall and have a road record of 24-36. This is the series opener of a 3-game series with the Astros on Friday. Their offense ranks 28th in the MLB with a .683 OPS. Logan Gilbert was their starting pitcher on Thursday while George Kirby is making his start in this game on Friday. He is 8-9 with a 3.68 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 2 BB with 2 SO on 4 hits through 5 IP against the Tampa Bay Rays.

The Astros are entering this series off a win and won their 3-game series against the San Francisco Giants 2-1 in their last series. They enter this game with a 62-60 record overall and have a home record of 30-29. This is the 1st game of a 3-game series with the Mariners on Friday and they have Thursday off as a day of rest. Their offense ranks 9th in the MLB with a .730 OPS. Bryan King was their starting pitcher on Wednesday while Peter Lambert is making his start in this game on Friday. He is 8-6 with a 3.09 ERA this season. His team won 3 of their last 4 games this season with him making an appearance. In his last MLB regular season start, he allowed 2 earned runs, 1 homer, and 3 walks with 3 strikeouts on 5 hits through 5 innings pitched against the San Diego Padres.

The current betting odds have the Astros listed as a favorite in this game according to Draftkings Sportsbook. The Astros have looked good in their games this season with their 62-60 record overall which has them right at the top of the AL West. They have looked good in their own ballpark too with their 30-29 home record this season. Meanwhile, the Mariners haven't looked good in their games this season with their 57-65 record overall which has them right in the middle of the AL West. They have been a terrible road team too with their 24-36 road record this year. The Mariners are 3-7 in their last 10 games now and they have been in a terrible slump lately, sliding down the Wild Card race. The Astros are only 5-5 in their last 10 games, but they have been one of the hottest teams in the league over the last month as they were well under .500 before going on this run to take over the lead in the division. The Astros are going with Lambert in this one and he has looked good this season. He is 8-6 with a 3.09 ERA and he hasn't been giving up many runs lately. He is coming off another good start giving up 2 earned runs which has been a common theme for him and the team has had a lot of success with him lately, winning 3 of their last 4 games with him starting. The Mariners are going with Kirby in this one and he hasn't looked great this year. He is 8-9 with a 3.68 ERA and the team has been having a lot of trouble with him. He only gave up 1 earned run in his last start, but that hasn't been a common theme for him. He has looked a lot worse on the road this year and the team has lost 2 of their last 3 games with him starting too. The Astros have been pitching a lot better lately and they have the stronger offense to give them the edge here. The best way to place a bet here is on the Astros to win this game. 

Mariners Astros Prediction:  Our MLB Pick for Friday, August 14, 2026 (8:10 pm ET start time) is Astros 6 Mariners 2.

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Seattle Mariners: 237-221 (-24.6 units) on the moneyline in all games. 101-126 (-35.5 units) on the moneyline in road games. 43-61 (-9.5 units) on the moneyline as an underdog of +100 to +150. 9-5 OVER as a road underdog of +100 or higher.

Houston Astros: 179-154 (+5.2 units) on the moneyline against right-handed starters. 132-101 (+10.9 units) on the moneyline vs. an AL team with a slugging percentage .410 or worse on the season. 59-52 (+5.9 units) on the moneyline vs. an AL starting pitcher whose ERA is 3.70 or better. 26-16 OVER when the money line is -100 to -150.

Seattle Mariners:  C. Young (2B) Day To Day - Head. G. Speier (RP) Day To Day - Back. C. Sulser (RP) Fifteen Day IL - Oblique. L. Raley (RF) Ten Day IL - Elbow. J. Crawford (SS) Ten Day IL - Wrist. W. Wilson (3B) Sixty Day IL - Thumb. M. Brash (RP) Fifteen Day IL - Lat. C. Criswell (RP) Sixty Day IL - Shoulder. C. Vargas (RP) Sixty Day IL - Lat. L. Evans (SP) Sixty Day IL - Arm.

Houston Astros:  J. Altuve (2B) Day To Day - Foot. B. Matthews (CF) Ten Day IL - Knee. M. Burrows (SP) Fifteen Day IL - Elbow. C. Correa (SS) Sixty Day IL - Ankle. B. Walter (RP) Sixty Day IL - Elbow.

“The Yankees were able to find a way with Gabe, too. It’s been a few days since he has been out there. He probably felt a little different out there.” - Dan Wilson after his team’s loss against the Yankees in their game on Wednesday. 

“Good teams find a way and we did. We finished strong this road trip -- [going] 3-3 -- and that’s what you want to do. That was a team coming together and grinding. We used everyone in that ‘pen who was available, and we got the big hits when we needed the most.” - Joe Espada after his team’s win against the Giants in their game on Wednesday. 

Randy Arozarena (R) LF

Julio Rodríguez (R) CF

Dominic Canzone (L) RF

Cal Raleigh (S) DH

Josh Naylor (L) 1B

Brendan Donovan (L) 2B

Weston Wilson (R) 3B

Jhonny Pereda (R) C

Leo Rivas (S) SS

Jeremy Peña (R) SS

Yordan Alvarez (L) DH

Isaac Paredes (R) 3B

Daulton Varsho (L) CF

LaMonte Wade Jr. (L) 1B

Cam Smith (R) RF

Taylor Trammell (L) LF

Nick Allen (R) 2B

Christian Vázquez (R) C

Batting Average:  Randy Arozarena (.277)

Hits:  Cole Young (116)

Home Runs:  Dominic Canzone (19)

RBI:  Cole Young (52)

Stolen Bases:  Josh Naylor (23)

Wins:  George Kirby (8)

Saves:  Andrés Muñoz (20)

ERA:  Matt Brash (0.54)

Batting Average:  Yordan Alvarez (.322)

Hits:  Yordan Alvarez (140)

Home Runs:  Yordan Alvarez (35)

RBI:  Yordan Alvarez (87)

Stolen Bases:  Cam Smith (10)

Wins:  Peter Lambert (8)

Saves:  Josh Hader (17)

ERA:  Josh Hader (0.96)

Managers:

Seattle Mariners: Dan Wilson (3rd season)

Houston Astros: Joe Espada (3rd season)