Houston Astros vs Seattle Mariners Prediction & Picks - MLB

USA - MLB

Houston Astros
5/13/26 20:10
Seattle Mariners

Prediction:

 

Mariners (-1) to win

-102
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 by Simon Day | in MLB Picks

The Houston Astros and the Seattle Mariners meet at Daikin Park on Wednesday night in the final game of a series that has been dominated by a rapidly improving Seattle side. 

After edging the first matchup of the series 3-1, the Mariners produced a superb game two display to trounce Houston 10-2. Those two victories have moved Seattle to 21-22 for the season, a record that puts them hot on the heels of the Oakland Athletics in the AL West.

It has been an utterly dismal season so far for the Astros; their current 16-27 record is the joint worst in the entire American League. Home form has been an especially big issue for the Astros, and they have now lost ten of their last 12 matchups at Daikin Park. 

Houston Astros vs Seattle Mariners Form

Table

Teams Pts P W L
12 Houston Astros
0.504 119 60 59
24 Seattle Mariners
0.471 119 56 63

Houston Astros and Seattle Mariners Latest Matches

Houston Astros
Houston Astros Latest matches
L W L L L L
Victories

1/6 (17%)

Defeats

5/6 (83%)

May 12, 2026 - MLB

Houston Astros
2 :  10
Seattle Mariners

May 11, 2026 - MLB

Houston Astros
1 :  3
Seattle Mariners

May 10, 2026 - MLB

Cincinnati Reds
5 :  0
Houston Astros

May 9, 2026 - MLB

Cincinnati Reds
3 :  1
Houston Astros

May 8, 2026 - MLB

Cincinnati Reds
0 :  10
Houston Astros

May 6, 2026 - MLB

Houston Astros
2 :  12
Los Angeles Dodgers
W L W L L L
Victories

2/6 (33%)

Defeats

4/6 (67%)

May 12, 2026 - MLB

Houston Astros
2 :  10
Seattle Mariners

May 11, 2026 - MLB

Houston Astros
1 :  3
Seattle Mariners

May 6, 2026 - MLB

Houston Astros
2 :  12
Los Angeles Dodgers

May 5, 2026 - MLB

Houston Astros
2 :  1
Los Angeles Dodgers

May 4, 2026 - MLB

Houston Astros
3 :  8
Los Angeles Dodgers

Apr 26, 2026 - MLB

Houston Astros
7 :  4
New York Yankees
L W W W L L
Victories

3/6 (50%)

Defeats

3/6 (50%)

May 10, 2026 - MLB

Cincinnati Reds
5 :  0
Houston Astros

May 9, 2026 - MLB

Cincinnati Reds
3 :  1
Houston Astros

May 8, 2026 - MLB

Cincinnati Reds
0 :  10
Houston Astros

May 3, 2026 - MLB

Boston Red Sox
1 :  3
Houston Astros

May 2, 2026 - MLB

Boston Red Sox
3 :  6
Houston Astros

May 1, 2026 - MLB

Boston Red Sox
3 :  1
Houston Astros
Seattle Mariners
Seattle Mariners Latest matches
W W L L W W
Victories

4/6 (67%)

Defeats

2/6 (33%)

May 12, 2026 - MLB

Houston Astros
2 :  10
Seattle Mariners

May 11, 2026 - MLB

Houston Astros
1 :  3
Seattle Mariners

May 10, 2026 - MLB

Chicago White Sox
2 :  1
Seattle Mariners

May 9, 2026 - MLB

Chicago White Sox
6 :  1
Seattle Mariners

May 8, 2026 - MLB

Chicago White Sox
8 :  12
Seattle Mariners

May 6, 2026 - MLB

Seattle Mariners
3 :  1
Atlanta Braves
L L L W L W
Victories

2/6 (33%)

Defeats

4/6 (67%)

May 6, 2026 - MLB

Seattle Mariners
3 :  1
Atlanta Braves

May 5, 2026 - MLB

Seattle Mariners
2 :  3
Atlanta Braves

May 4, 2026 - MLB

Seattle Mariners
5 :  4
Atlanta Braves

May 3, 2026 - MLB

Seattle Mariners
1 :  4
Kansas City Royals

May 2, 2026 - MLB

Seattle Mariners
2 :  3
Kansas City Royals

May 1, 2026 - MLB

Seattle Mariners
6 :  7
Kansas City Royals
W W L L W W
Victories

4/6 (67%)

Defeats

2/6 (33%)

May 12, 2026 - MLB

Houston Astros
2 :  10
Seattle Mariners

May 11, 2026 - MLB

Houston Astros
1 :  3
Seattle Mariners

May 10, 2026 - MLB

Chicago White Sox
2 :  1
Seattle Mariners

May 9, 2026 - MLB

Chicago White Sox
6 :  1
Seattle Mariners

May 8, 2026 - MLB

Chicago White Sox
8 :  12
Seattle Mariners

Apr 29, 2026 - MLB

Minnesota Twins
3 :  5
Seattle Mariners

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

Houston Astros

0 %

Seattle Mariners

100 %

May 12, 2026 - MLB

Houston Astros
2 :  10
Seattle Mariners

May 11, 2026 - MLB

Houston Astros
1 :  3
Seattle Mariners

Apr 13, 2026 - MLB

Seattle Mariners
6 :  2
Houston Astros

Apr 12, 2026 - MLB

Seattle Mariners
6 :  1
Houston Astros

Apr 11, 2026 - MLB

Seattle Mariners
8 :  7
Houston Astros

Apr 10, 2026 - MLB

Seattle Mariners
9 :  6
Houston Astros
Houston Astros vs Seattle Mariners Picks

Houston Astros - Seattle Mariners Key Points

  1. Seattle have won 5 of their last 7 road games
  2. Houston have lost 10 of their last 12 home games
  3. The Astros are on a 4 game losing streak
  4. seattle have won their last 9 matches against Houston

Our Houston Astros vs Seattle Mariners Prediction

The bookies give Houston the slight edge in this one, but their recent displays do little to suggest they can end their four game losing run. 

The Mariners are far from the finished article, but they have been steadily improving in recent weeks, and as they showed in game two, they have more than enough offensive firepower to cause plenty of problems for the Astros.

Not only are we tipping Seattle to win, but we think they will do so comfortably and easily beat the -1 spread. 

Our prediction for Houston Astros vs Seattle Mariners is: Mariners (-1) to win. 

Prediction:

 

Mariners (-1) to win

-102
$150 offered for betting!

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