Mariners vs Astros Prediction, Odds, Moneyline, Spread & Over/Under for April 13

Odds updated as of 12:11 a.m.

The MLB's Monday schedule includes the Seattle Mariners taking on the Houston Astros.

All the information you need to make smart bets on this matchup at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

Mariners vs Astros Game Info

• Seattle Mariners (7-9) vs. Houston Astros (6-10)
• Date: Monday, April 13, 2026
• Time: 4:10 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Mariners.TV and SCHN

Mariners vs Astros Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-166) | HOU: (+140)
• Spread: SEA: -1.5 (+128) | HOU: +1.5 (-154)
• Total: 7.5 -- Over: (-105) | Under: (-115)

Mariners vs Astros Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 1-2, 3.60 ERA vs Mike Burrows (Astros) - 1-2, 5.63 ERA

The Mariners will look to George Kirby (1-2) against the Astros and Mike Burrows (1-2). Kirby and his team are 1-2-0 ATS this season when he starts. Kirby's team has won 33.3% of his starts when they are favored on the moneyline (1-2). The Astros have a 1-2-0 record against the spread in Burrows' starts. The Astros were named the moneyline underdog for one Burrows start this season -- they won.

Mariners vs Astros Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (53.4%)

Mariners vs Astros Moneyline

• Houston is the underdog, +140 on the moneyline, while Seattle is a -166 favorite at home.

Mariners vs Astros Spread

• The Mariners are hosting the Astros and are favored by 1.5 runs (+128 to cover) on the runline. Houston is -154 to cover.

Mariners vs Astros Over/Under

• The over/under for Mariners-Astros on April 13 is 7.5. The over is -105, and the under is -115.

Bet on Seattle Mariners vs. Houston Astros on FanDuel today!

Mariners vs Astros Betting Trends

• The Mariners have been victorious in six, or 46.2%, of the 13 contests they have been chosen as favorites in this season.
• This season Seattle has been victorious two times in four chances when named as a favorite of at least -166 on the moneyline.
• The Mariners and their opponents have gone over the total this season in seven of their 16 opportunities.
• The Mariners have an against the spread record of 6-10-0 in 16 games with a line this season.
• The Astros have been the moneyline underdog five total times this season. They've gone 2-3 in those games.
• Houston has played as a moneyline underdog of +140 or longer in just one game this season, which it lost.
• The Astros have combined with opponents to go over the total 11 times this season for an 11-5-0 record against the over/under.
• The Astros have collected a 7-9-0 record ATS this season (covering 43.8% of the time).

Mariners Player Leaders

• Randy Arozarena has an OPS of .826, fueled by an OBP of .426 to go with a slugging percentage of .400. He has a .291 batting average, as well.
• Among qualifying hitters in MLB, he is 47th in batting average, 14th in on-base percentage, and 84th in slugging.
• Cole Young has two doubles, a triple, two home runs and seven walks. He's batting .259 and slugging .444 with an on-base percentage of .355.
• He ranks 69th in batting average, 63rd in on-base percentage and 60th in slugging among qualifying hitters.
• Brendan Donovan leads Seattle with 12 hits. He is batting .293 this season and five of his hits have gone for extra bases.
• Dominic Canzone has two home runs, four RBI and a batting average of .206 this season.

Astros Player Leaders

• Yordan Alvarez has racked up 18 hits with a .500 on-base percentage, leading the Astros in both categories. He's batting .340 and slugging .755.
• Including all qualified hitters in the big leagues, his batting average puts him 10th, his on-base percentage is first, and he is second in slugging.
• Christian Walker has six doubles, three home runs and seven walks while hitting .298. He's slugging .561 with an on-base percentage of .375.
• His batting average is 40th among all qualified players, his on-base percentage is 43rd, and he is 21st in slugging.
• Jose Altuve has a .526 slugging percentage, which leads the Astros.
• Carlos Correa is batting .294 with three doubles, a home run and six walks.

Mariners vs Astros Head to Head

• 4/12/2026: 6-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 4/11/2026: 8-7 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -152, Underdog Moneyline: +128)
• 4/10/2026: 9-6 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 9/21/2025: 7-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -148, Underdog Moneyline: +126)
• 9/20/2025: 6-4 SEA (Favorite: Astros, Spread: -1.5, Total: 8, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 9/19/2025: 4-0 SEA (Favorite: Astros, Spread: -1.5, Total: 7.5, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 7/20/2025: 11-3 HOU (Favorite: Mariners, Spread: -1.5, Total: 6.5, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 7/19/2025: 7-6 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -132, Underdog Moneyline: +112)
• 7/18/2025: 6-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 5/25/2025: 5-3 HOU (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -138, Underdog Moneyline: +118)

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