Seattle Mariners vs Houston Astros Prediction & Picks - MLB

USA - MLB

Seattle Mariners
4/11/26 21:40
Houston Astros

Prediction:

 

Seattle Mariners ML

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 by Matt Lowrimore | in MLB Picks

A full 15-game MLB slate is scheduled for Saturday, which will include an American League West matchup between the Seattle Mariners and the Houston Astros. Let’s take a look at the match statistics and predictions for this game between the Mariners and the Astros.

Seattle has not been good to start the 2026 season, but will look to inch closer to .500 in Game 2 of this divisional series. Starting for the Mariners on Saturday will be Luis Castillo. He enters this game with an ERA of 2.79 and has been one of the lone bright spots for the Mariners when it comes to starting pitching. His hot start suggests that he will be able to navigate a tricky Houston lineup and keep them at bay.

As for Houston, they have also started the 2026 season slowly and are set to start Lance McCullers Jr. in Game 2. McCullers Jr. enters this game with a record of 1-0 and has an ERA of 3.27. While he has been decent, his last start was on the road, where he allowed three earned runs over 4.0 innings.

Seattle Mariners vs Houston Astros Form

Table

Teams Pts P W L
13 Seattle Mariners
0.5 84 42 42
18 Houston Astros
0.482 85 41 44

Seattle Mariners and Houston Astros Latest Matches

Seattle Mariners
Seattle Mariners Latest matches
L L L L L W
Victories

1/6 (17%)

Defeats

5/6 (83%)

Apr 10, 2026 - MLB

Seattle Mariners
9 :  6
Houston Astros

Apr 8, 2026 - MLB

Texas Rangers
3 :  0
Seattle Mariners

Apr 7, 2026 - MLB

Texas Rangers
3 :  2
Seattle Mariners

Apr 6, 2026 - MLB

Texas Rangers
2 :  1
Seattle Mariners

Apr 5, 2026 - MLB

Los Angeles Angels
8 :  7
Seattle Mariners

Apr 4, 2026 - MLB

Los Angeles Angels
1 :  0
Seattle Mariners
L W W L L W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Apr 10, 2026 - MLB

Seattle Mariners
9 :  6
Houston Astros

Apr 1, 2026 - MLB

Seattle Mariners
3 :  5
New York Yankees

Mar 31, 2026 - MLB

Seattle Mariners
0 :  5
New York Yankees

Mar 30, 2026 - MLB

Seattle Mariners
2 :  1
New York Yankees

Mar 29, 2026 - MLB

Seattle Mariners
8 :  0
Cleveland Guardians

Mar 28, 2026 - MLB

Seattle Mariners
5 :  6
Cleveland Guardians
W L L L L L
Victories

1/6 (17%)

Defeats

5/6 (83%)

Apr 8, 2026 - MLB

Texas Rangers
3 :  0
Seattle Mariners

Apr 7, 2026 - MLB

Texas Rangers
3 :  2
Seattle Mariners

Apr 6, 2026 - MLB

Texas Rangers
2 :  1
Seattle Mariners

Apr 5, 2026 - MLB

Los Angeles Angels
8 :  7
Seattle Mariners

Apr 4, 2026 - MLB

Los Angeles Angels
1 :  0
Seattle Mariners

Apr 3, 2026 - MLB

Los Angeles Angels
1 :  3
Seattle Mariners
Houston Astros
Houston Astros Latest matches
W L L L L L
Victories

1/6 (17%)

Defeats

5/6 (83%)

Apr 10, 2026 - MLB

Seattle Mariners
9 :  6
Houston Astros

Apr 8, 2026 - MLB

Colorado Rockies
9 :  1
Houston Astros

Apr 7, 2026 - MLB

Colorado Rockies
5 :  1
Houston Astros

Apr 6, 2026 - MLB

Colorado Rockies
9 :  7
Houston Astros

Apr 5, 2026 - MLB

Athletics
12 :  10
Houston Astros

Apr 4, 2026 - MLB

Athletics
0 :  11
Houston Astros
L W W W W W
Victories

5/6 (83%)

Defeats

1/6 (17%)

Apr 1, 2026 - MLB

Houston Astros
6 :  4
Boston Red Sox

Mar 31, 2026 - MLB

Houston Astros
9 :  2
Boston Red Sox

Mar 30, 2026 - MLB

Houston Astros
8 :  1
Boston Red Sox

Mar 29, 2026 - MLB

Houston Astros
9 :  7
Los Angeles Angels

Mar 28, 2026 - MLB

Houston Astros
11 :  9
Los Angeles Angels

Mar 27, 2026 - MLB

Houston Astros
2 :  6
Los Angeles Angels
W L L L L L
Victories

1/6 (17%)

Defeats

5/6 (83%)

Apr 10, 2026 - MLB

Seattle Mariners
9 :  6
Houston Astros

Apr 8, 2026 - MLB

Colorado Rockies
9 :  1
Houston Astros

Apr 7, 2026 - MLB

Colorado Rockies
5 :  1
Houston Astros

Apr 6, 2026 - MLB

Colorado Rockies
9 :  7
Houston Astros

Apr 5, 2026 - MLB

Athletics
12 :  10
Houston Astros

Apr 4, 2026 - MLB

Athletics
0 :  11
Houston Astros

Seattle Mariners against Houston Astros : Head to Head (H2H)

Seattle Mariners

83 %

Houston Astros

17 %

Apr 10, 2026 - MLB

Seattle Mariners
9 :  6
Houston Astros

Sep 21, 2025 - MLB

Houston Astros
3 :  7
Seattle Mariners

Sep 20, 2025 - MLB

Houston Astros
4 :  6
Seattle Mariners

Sep 19, 2025 - MLB

Houston Astros
0 :  4
Seattle Mariners

Jul 20, 2025 - MLB

Seattle Mariners
3 :  11
Houston Astros

Jul 19, 2025 - MLB

Seattle Mariners
7 :  6
Houston Astros

Seattle Mariners - Houston Astros Key Points

  1. Luis Castillo has an ERA of 2.79
  2. Luis Castillo has not allowed an earned run at home this season
  3. Lance McCullers Jr. has an ERA of 3.27
  4. Lance McCullers Jr. has allowed three earned runs in 4.0 innings on the road

Our Seattle Mariners vs Houston Astros Prediction

Seattle is the clear favorite; however, they still look to be the best betting option. As bad as the Mariners have looked this season, Castillo gives them a great chance to win, even against this Houston lineup.

As mentioned, Castillo has looked excellent this season, especially at home, where he pitched 6.0 shutout innings against the New York Yankees in his first start of 2026.

McCullers Jr., on the other hand, looked good in his only home start, but struggled in his most recent start, which was on the road. 

Therefore, given the home/away splits from these starting pitchers so far, our Seattle Mariners vs Houston Astros prediction is: Seattle Mariners ML.

Prediction:

 

Seattle Mariners ML

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All tips are fully researched and given in good faith, but profits cannot be guaranteed.

Seattle Mariners vs Houston Astros Picks