Seattle Mariners vs Houston Astros Picks, Prediction, Odds, and Line Movement for Wednesday May 13 2026
Use Code WWWC The Seattle Mariners look to complete another strong performance in Houston on Wednesday night after taking the first two games of the series in convincing fashion. While Seattle enters with momentum and a major pitching edge overall, Bryce Miller’s return from injury creates an interesting wrinkle against an Astros lineup still capable of producing offensively. Bettors searching for updated MLB picks should pay close attention to this American League West matchup.
Quick Picks and Prediction
- Moneyline Pick: Mariners -126
- Spread Pick: Mariners -1.5
- Total Pick: Over 9
- Projected Final Score: Mariners 6, Astros 4
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Odds and Line Movement
Opening Odds
| Team | Moneyline |
|---|---|
| Seattle | -126 |
| Houston | +104 |
Current Odds
| Team | Moneyline |
|---|---|
| Seattle | -131 |
| Houston | +109 |
Line Movement - Moneyline
| Date | Time | Seattle | Houston | Public Betting |
|---|---|---|---|---|
| 05/13 | 01:38:37 AM | -126 | +104 | HOU 99%, SEA 50% |
| 05/13 | 01:38:07 AM | -131 | +109 | HOU 99%, SEA 50% |
| 05/12 | 05:40:46 PM | -126 | +104 |
Line Movement - Total
| Date | Time | Over | Under |
|---|---|---|---|
| 05/12 | 10:19:33 PM | 9 -118 | 9 -102 |
| 05/12 | 05:40:46 PM | 9 -115 | 9 -105 |
Mariners vs Astros Betting Preview
Seattle enters Wednesday night playing excellent baseball after winning the first two games of this series by scores of 3-1 and 10-2. The Mariners continue benefiting from one of the stronger overall pitching staffs in the league, entering this matchup with a 3.67 team ERA and 1.22 WHIP.
Bryce Miller is expected to make his first start of the season after missing time with an oblique injury. While there are legitimate concerns surrounding workload and sharpness in his return outing, Seattle still profiles favorably because of Houston’s current struggles and unreliable pitching depth.
The Mariners lineup showed its offensive upside Tuesday night when Seattle exploded for ten runs against Houston pitching. Randy Arozarena continues leading the offense with a .303 batting average, .389 on-base percentage and .465 slugging percentage, while Luke Raley has added eight home runs and 23 RBI.
Dominic Canzone also contributed significantly during Tuesday’s offensive breakout, giving Seattle additional lineup depth entering this matchup. Even though the Mariners have lower overall season batting numbers than Houston, their recent offensive form has been much stronger.
Houston enters Wednesday on a four-game losing streak and continues dealing with major issues on the mound. Lance McCullers Jr. has struggled badly this season, posting a 7.41 ERA and 1.50 WHIP across 34 innings while allowing five home runs.
McCullers has also battled command issues with 20 walks already this season, creating consistent traffic on the bases. Those struggles have placed additional pressure on an Astros bullpen that has already been heavily exposed throughout the season.
Despite the disappointing record, Houston still owns stronger season-long offensive numbers than Seattle. The Astros are batting .255 with a .330 on-base percentage and .421 slugging percentage while totaling 52 home runs.
Yordan Alvarez remains the centerpiece of the lineup with a .308 batting average, .413 on-base percentage, .616 slugging percentage, 13 home runs and 29 RBI. However, injuries continue impacting Houston’s depth throughout the lineup and bullpen.
The Astros enter this matchup with a troubling 5.61 team ERA and 1.59 WHIP, both significantly worse than Seattle’s overall pitching profile.
Betting Trends - SEA and HOU
- Seattle has won the first two games of the series.
- The Mariners defeated Houston 10-2 on Tuesday night.
- Houston enters Wednesday on a four-game losing streak.
- Lance McCullers Jr. owns a 7.41 ERA this season.
- Seattle has a 3.67 team ERA compared to Houston’s 5.61 mark.
- Yordan Alvarez leads Houston with 13 home runs.
Key Injuries and Notes - SEA and HOU
- Seattle remains without Teddy McGraw, Patrick Wisdom, Victor Robles and Jose Ferrer.
- Bryce Miller is making his first start after returning from injury.
- Houston is missing Walker Janek, Lucas Spence, Yainer Diaz, Jeremy Pena and Nate Pearson.
- The Astros bullpen depth continues to be impacted by injuries and poor performance.
Mariners vs Astros ATS and Total Picks
- Moneyline Pick: Mariners -131
- Spread Pick: Mariners -1.5
- Total Pick: Over 9
Final Score Prediction
Mariners 6, Astros 4
How to Bet
This matchup sets up well for Seattle because the Mariners continue holding major advantages in overall pitching quality and recent form. While Bryce Miller’s return introduces some uncertainty, Houston’s current pitching problems and bullpen struggles make the Astros difficult to trust in their current form.
The over also deserves consideration because Lance McCullers Jr. has consistently allowed baserunners and hard contact throughout the season. Bettors searching for additional baseball wagering opportunities can explore the best social sportsbooks available now. Players interested in promotional betting offers should also review the latest fliff promo code before placing wagers.
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