Mariners vs. Astros Prediction, Odds, Picks - April 9

Updated Apr. 9, 2025 4:00 p.m. ET

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The Seattle Mariners and Houston Astros will meet on Wednesday at T-Mobile Park, at 4:10 p.m. ET, with Julio Rodriguez and Jose Altuve among those expected to deliver at the plate. Bookmakers list the Mariners as -128 favorites on the moneyline, while giving the underdog Astros +108 moneyline odds to win. Seattle is the favorite on the run line (-1.5 with +176 odds). The total for the game is listed at 7 runs.

MLB

Houston Astros HOU

6

FINAL

7

Astros ^5-7

HOU ^5-7

6

Mariners ^5-8

SEA ^5-8

7

Seattle Mariners SEA

FINAL

SEA +121 OVER 7.5

Here is everything you need from a betting perspective on the Mariners-Astros game, regarding the run line, moneyline and total, plus expert picks.

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Astros vs. Mariners Highlights | MLB on FOX

Check out the best moments between the Houston Astros and the Seattle Mariners.

Mariners vs. Astros Game Information & Odds

• When: Wednesday, April 9, 2025 at 4:10 p.m. ET
• Where: T-Mobile Park in Seattle, Washington
• How to watch on TV: ROOT Sports NW and SCHN

Mariners vs. Astros Prediction

• Score Prediction: Mariners 8, Astros 7
• Total Prediction: Over 7 runs
• Win Probabilities: Mariners 52%, Astros 48%

Mariners vs. Astros Betting Insights

• This season, the Mariners have won three out of the eight games in which they've been favored.
• This season Seattle has won three of its seven games when favored by at least -128 on the moneyline.
• The Mariners have a 56.1% chance to win this game based on the implied probability of the moneyline.
• The Astros have been underdogs in six games this season and have come away with the win three times (50%) in those contests.
• Houston has a win-loss record of 1-3 when favored by +108 or worse by bookmakers this year.
• Oddsmakers have implied with the moneyline set for this matchup that the Astros have a 48.1% chance of pulling out a win.

FINAL

HOU 6 · SEA 7

MLB

RUN LINE

TO WIN

TOTAL

Houston Astros

HOU

-1.5

-144

O 7.5

Seattle Mariners

SEA

+1.5

+121

U 7.5

Mariners Player Insights

• Rodriguez leads the Mariners with three big flies on the year. He's also hitting .178 with five RBI.
• Of all hitters in MLB, Rodriguez is 23rd in homers and 86th in RBI.
• Jorge Polanco has totaled 10 runs batted in to pace his team.
• Polanco carries a six-game streak with at least one hit into this matchup. During his last six games he is batting .417 with two home runs, a walk and 10 RBI.
• Cal Raleigh has two doubles, two home runs and seven walks while batting .205.
• Dylan Moore is batting .308 with two home runs and four walks.

Mariners Team Props

Astros Player Insights

• Altuve has a team-best batting average of .340, while pacing the Astros in long balls with three.
• Altuve's home run total places him 23rd in the big leagues, and he ranks 86th in RBI.
• Altuve takes a hitting streak of four games into this matchup. In his last five games he is batting .292 with two home runs, two walks and four RBI.
• Jeremy Pena is batting .154 with two home runs and three walks.
• Pena ranks 47th among all batters in MLB in home runs, and 221st in RBI.
• Yordan Alvarez paces the Astros with seven runs batted in.
• Isaac Paredes is hitting .214 with a double and five walks.

Astros Team Props

Astros vs. Mariners Highlights | MLB on FOX

Check out the best moments between the Houston Astros and the Seattle Mariners.

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MLB - Houston Astros vs. Seattle Mariners - 04/09/2025

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