Seattle Mariners vs Houston Astros Betting Pick & Prediction for 5/12

MLB game preview

The Seattle Mariners will visit the Houston Astros for a regular season game. The Mariners have a 20-22 record and are second in the AL West. They are coming off a win and have gone 4-6 in their last ten games.

The Astros hold a 16-26 record and are fifth in the AL West. They have lost their last three games and also have a 4-6 record in their last ten games. The game will take place at Daikin Park with a scheduled start time of 8:10 PM.

Seattle Mariners Team Preview

The Seattle Mariners recently had a mix of wins and losses. They secured a 3-1 win against the Houston Astros on May 11th. George Kirby pitched 5 innings with 7 strikeouts, and Julio Rodríguez hit a home run.

On May 10th, the Mariners faced a narrow 2-1 loss to the Chicago White Sox. Logan Gilbert delivered a strong performance with 9 strikeouts and only allowed 1 hit over 6 innings. Despite the loss, Josh Naylor and Julio Rodríguez contributed with key hits.

The Mariners’ overall batting average stands at .229, ranking 18th in the league. They have hit 47 home runs this season, placing them 8th in that category. Bryan Woo is expected to start the next game with a 4.02 ERA and 38 strikeouts this season.

Mariners vs Astros Game Day Info

  • Sport: MLB
  • Teams: Seattle Mariners vs. Houston Astros
  • Venue: Daikin Park in Houston, TX
  • Date: Tuesday, May 12, 2026
  • Betting Odds: Mariners Moneyline -153, Astros Moneyline +129

Houston Astros Team Preview

The Houston Astros have been struggling in recent games. They have lost four of their last five games. Their only win came against the Cincinnati Reds, where they scored 10 runs.

The Astros’ hitting has been inconsistent. They rank first in doubles but are 14th in walks. Christian Walker leads the team with nine home runs and 27 RBIs.

On the pitching side, the Astros have the highest ERA in the league at 5.50. They also rank 23rd in batting average against at .261. Tatsuya Imai, with a 7.27 ERA, is the probable starter for the next game.

BTB Betting Pick

The Mariners have a moneyline of -153, while the Astros are at +129. The Mariners have a strong pitching record with a 3.71 ERA, ranking 7th. In contrast, the Astros have a 5.50 ERA, ranking 30th. Given these stats, the Mariners are likely to win with a projected score of Mariners 5, Astros 3. The recommendation is to pick the Mariners to win straight up.

The total for the game is set at 8.5, with the over at -119 and the under at -101. The Mariners’ pitching could limit the Astros’ runs, while the Mariners’ hitting ranks lower. The projected total score is 8. So, the recommendation is to take the under 8.5 for this game.