Tampa Bay Rays vs Seattle Mariners Prediction 8/8/2025 Today’s MLB Picks

In this article, we will formulate a Tampa Bay Rays vs Seattle Mariners Prediction for this MLB game on Friday, August 8th at the T-Mobile Park in the opening game of this series. Let’s take a look at the prediction for this MLB matchup.

Seattle Mariners Preview

The Seattle Mariners have a 63-53 record this season and are sitting on the second place of the AL West. The Mariners have a 34-25 home record and are 62-48 in over/under. They are coming off a 4-3 home victory over the White Sox, and are 6-1 in their last 7 games. Over is 4-0-1 in their last 5 games and they are playing the Orioles and the Mets next.

The Mariners have a .243 batting average this season, .319 OBP and .410 Slugging percentage. Seattle’s pitching staff has a 3.83 ERA and 1.24 WHIP. Julio Rodriguez leads the Mariners in hits with 121, while JP Crawford is the team’s best hitter with a .265 batting average. Cal Raleigh leads the team both in RBI with 90, and in home runs with 42.

Luis Castillo (R) is the projected starting pitcher for the Mariners, and he has an 8-6 record, 3.22 ERA and 1.21 WHIP.

Tampa Bay Rays Preview

The Tampa Bay Rays have a 57-59 record this season and are sitting on the 4th place of the AL East. The Rays have a 25-29 road record and are 45-64 in over/under. They are coming off a 5-4 road victory over the Angels, and have back-to-back wins. Under is 4-1-1 in their last 6 games and are playing the Giants and the Athletics next.

The Rays have a .252 batting average this season, .315 OBP and .399 slugging percentage. Tampa’s pitching staff has a 3.86 ERA and 1.21 WHIP. Yandy Diaz leads the Rays with 122 hits, while Jonathan Aranda is the team’s best hitter with .316 batting average. Junior Caminero leads the team in RBI, with 76 and in home runs, with 30.

Drew Rasmussen (R) will take the mound for the Rays, and he has a 9-5 record, 2.81 ERA and 1.02 WHIP.

Why the Seattle Mariners will win

• The Mariners have won each of their last seven games against the Rays after going to extra innings.
• The Rays have lost each of their last eight games as underdogs against American League opponents following a win.
• The Rays have failed to cover the run line in each of their last six games following a win.
• The Mariners have covered the run line in five of their last six games after going to extra innings.
• The Mariners have led after 3 innings in three of their last four games.
• The Mariners have led after 5 innings in each of their last four home games against American League opponents that held a losing record.

Why the Tampa Bay Rays will win

• The Mariners have lost each of their last nine games against AL East opponents that held a losing record.
• The Rays have won each of their last six night games against the Mariners following a road win.
• The Mariners have failed to cover the run line in each of their last eight night games against AL East opponents following a win.
• The Rays have covered the run line in seven of their last eight games as underdogs against AL West opponents.
• The Rays have led after 5 innings in four of their last five night games against American League opponents that held a winning record.

Total Runs Facts

• Each of the Mariners’ last six games after going to extra innings have gone OVER the total runs line.
• Four of the Rays’ last five games as underdogs have gone UNDER the total runs line.
• The ‘Inning 1 UNDER 0.5 runs’ market has hit in seven of the Rays’ last eight games at T-Mobile Park.
• The ‘Inning 1 UNDER 0.5 runs’ market has hit in 13 of the Mariners’ last 15 home games.

Matchup/League Facts

• The Mariners rank 30th in the league for doubles this season (154).
• The Mariners rank 29th in the league for triples this season (6).
• The Rays rank 1st in the league for steals this season (149).
• The Rays rank 5th in the league for walks allowed this season (330).

Tampa Bay Rays vs Seattle Mariners Prediction

The Mariners are 3-1 in their last 4 head-to-head meetings against the Rays, but the Rays are 6-3 in their last 9 overall meetings. Over is 5-2-2 in their last 9 meetings.

In this Tampa Bay Rays vs Seattle Mariners Prediction, the Mariners are coming as -130 home favorites. The Mariners are rightfully favored, as they have a better overall record, and have been strong at home, while the Rays are below average on the road. I’m on the Mariners here. They play the second straight series at home, while the Rays are playing their second consecutive series on the road. Castillo has been excellent for the Mariners, and extremely strong at home, with a 2.40 home ERA. Both teams are very close in terms of bullpen ERA and offense, but playing the second straight series at home, with a strong home pitcher will propel them to victory today. Take the Seattle Mariners on the moneyline at home.