Seattle Mariners vs Houston Astros Prediction 8/14/2026 Today’s MLB Picks

In this article, we will formulate a Mariners vs Astros Prediction for this MLB matchup on Friday, August 14th in the opening game of this series. Let’s take a look at the prediction for this MLB matchup.

Houston Astros Preview

The Houston Astros have a 62-60 record this season and are sitting in 1st place in the AL West. They have a 30-29 home record and are coming off a 2-1 away win against the Giants. They will face the Angels and the Athletics next.

The Houston Astros have a .243 batting average this season, a .319 OBP, and a .411 slugging percentage. The Astros’ pitching staff has a 4.54 ERA and a 1.35 WHIP. Yordan Alvarez leads the Astros with a .322 batting average, 35 home runs, and 87 RBI.

Peter Lambert (R) is the projected starting pitcher for the Astros, and he has an 8-6 record, a 3.09 ERA, and a 1.15 WHIP.

Seattle Mariners Preview

The Seattle Mariners have a 57-65 record this season and are sitting in 3rd place in the AL West. They have a 24-36 away record and are coming off a 1-0 away win against the Yankees. They will face the Brewers and the Cubs next.

The Seattle Mariners have a .228 batting average this season, a .307 OBP, and a .374 slugging percentage. The Mariners’ pitching staff has a 3.81 ERA and a 1.21 WHIP. Randy Arozarena leads the Mariners with a .276 batting average and a team-high 52 RBI, while Julio Rodriguez adds a team-high 19 home runs.

George Kirby (R) is the projected starting pitcher for the Mariners, and he has an 8-9 record, a 3.68 ERA, and a 1.27 WHIP.

Seattle Mariners @ Houston Astros Betting Trends: August 14, 2026

• Probable Starting Pitcher: Peter Lambert      Record this season: 8-6      ERA: 3.09
• Home Record: 5-4
• Last 5 against Mariners: 0-2

Why the Houston Astros will win

• The Mariners have lost each of their last seven games following a road win.
• The Astros have won each of their last six games against AL West opponents.
• The Mariners have failed to cover the run line in each of their last eight games following a road win.
• The Astros have covered the run line in seven of their last eight games against AL West opponents.
• The Mariners have lost the first inning in each of their last four games against AL West opponents.
• The Astros have led after 3 innings in five of their last six home games against AL West opponents.
• The Astros have led after 5 innings in each of their last five night games at Daikin Park against AL West opponents.

• Probable Starting Pitcher: George Kirby      Record this season: 8-9      ERA: 3.68
• Road Record: 3-5
• Last 5 against Astros: 4-1

Why the Seattle Mariners will win

• The Mariners have won seven of their last eight games as underdogs against the Astros.
• The Astros have lost each of their last four games as favorites against the Mariners following a win.
• The Mariners have covered the run line in each of their last 10 games as underdogs against the Astros following a road win.
• The Astros have failed to cover the run line in seven of their last eight games as favorites against the Mariners following a win.
• The Mariners have led after 3 innings in seven of their last eight games at Daikin Park.
• The Mariners have led after 5 innings in each of their last eight games at Daikin Park.
• The Astros have lost the first inning in four of their last five night games against AL West opponents that held a losing record.

Total Runs Facts

• Eight of the Astros’ last nine games against AL West opponents have gone OVER the total runs line.
• Seven of the Mariners’ last eight games against AL West opponents have gone OVER the total runs line.
• There has been no run scored during the first inning in each of the Astros’ last eight home games against American League opponents.
• There has been at least one run scored in the first inning in each of the Mariners’ last five road games against AL West opponents.

Houston Astros Player Prop Facts

• Yainer Diaz has hit a home run in each of his last three appearances with the Astros as favorites against AL West opponents.
• Peter Lambert has recorded five or more strikeouts in eight of his last nine appearances against AL opponents.
• Christian Walker has recorded at least one hit in each of the Astros’ last nine games against AL opponents.
• Yordan Alvarez ranks 1st amongst qualified players for Batting Average (.322) this season.

Seattle Mariners Player Prop Facts

• Randy Arozarena has hit a home run in four of the Mariners’ last five road games against AL opponents.
• George Kirby has recorded a win in four of his last five appearances against the Astros.
• George Kirby has recorded six or more strikeouts in six of his last seven appearances against the Astros.
• Josh Naylor has recorded at least one hit in each of his last 11 appearances with the Mariners as road underdogs.
• Josh Naylor ranks T10th in the league in Steals (23) this season.

Matchup/League Facts

• The Astros rank 29th in the league for steals this season (38).
• The Astros rank 29th in the league for walks allowed this season (504).
• The Mariners rank 30th in the league for runs scored this season (469).
• The Mariners rank 30th in the league for doubles this season (143).

Mariners vs Astros Prediction

The Mariners are 9-1 in their last 10 meetings against the Astros and are 5-1 in their last 6 visits in Houston.

In this Mariners vs Astros Prediction, the Astros are coming as -125 home favorites. I like the pitching in this matchup, as both pitchers have a combined 6.77 ERA and have been in very good form, having given up two runs or less in 13 of their last 14 starts combined. Both offenses have been ice-cold, with the Mariners having scored two runs or less in six of their last seven games and the Astros in four of their last five. Take the under 8 in this one.

Nikos Lagouretos's Pick: Under 8