Mariners vs Rays Prediction 8/8/25 MLB Picks Today

The Tampa Bay Rays and the Seattle Mariners meet Friday in MLB action from T-Mobile Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Mariners vs Rays Prediction.

Starting Pitching Matchup

The Tampa Bay Rays will send out Drew Rasmussen for the start here and Rasmussen is 9-5 with a 2.81 ERA and 93 strikeouts this season. In his career, Rasmussen is 2-0 with a 0.69 ERA and 16 strikeouts against the Mariners. Luis Castillo will get the start for Seattle here and Castillo is 8-6 with a 3.22 ERA and 115 strikeouts this season. In his last five starts against the Rays, Castillo is 2-1 with a 3.30 ERA and 30 strikeouts.

Tampa Bay Rays Recap

The Tampa Bay Rays come into this game looking to add on to their 5-4 win over the Los Angeles Angels last time out to sit at 57-59 this season. After this series, the Rays will head on the road for a series against the Athletics.

Rays Win Back-To-Back Games

Jonathan Aranda has 113 hits with 22 doubles, 12 home runs and 54 RBIs. Brandon Lowe has 96 hits with 20 homers and 53 RBIs as well while Junior Caminero has 109 hits with 20 doubles, a team-high 30 home runs and 76 RBIs. Yandy Diaz has 122 hits with 20 doubles, 20 homers and 66 RBIs.

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.

Tampa Bay Rays Player Prop Facts

• Josh Lowe has hit a home run in two of the Rays’ last three games against the Mariners.
• Brandon Lowe has recorded at least one hit in each of his last 11 appearances after not playing the previous day.
• Drew Rasmussen has recorded a win in five of his last six appearances against opponents that held a winning record.
• Taylor Walls has recorded a Double in four of his last five appearances against AL opponents.
• Chandler Simpson ranks T3rd in the league in Steals (32) this season.

Seattle Mariners Recap

The Seattle Mariners come into this game looking to add on to their 4-3 win over the Chicago White Sox last time out to sit at 63-53 on the year. After this series, the Mariners will head on the road for a series against the Baltimore Orioles.

Mariners Win Four In A Row

Jorge Polanco has 83 hits including 18 home runs and 53 RBIs while Cal Raleigh has 105 hits with 16 doubles, a team-high 42 home runs and 90 RBIs. Randy Arozarena has 104 hits with 24 doubles, 23 home runs, 57 RBIs and 21 stolen bases. Julio Rodriguez also has 121 hits with 19 doubles, 3 triples, 21 home runs, 62 RBIs and 22 stolen bases. Dylan Moore has 9 homers and 12 stolen bases as well this season. J.P Crawford has 112 hits with 17 doubles, 9 home runs and 44 RBIs.

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.

Seattle Mariners Player Prop Facts

• Luis Castillo has recorded six or more strikeouts in 24 of his last 29 home appearances against opponents that held a losing record.
• Randy Arozarena has recorded at least one hit in each of his last nine appearances against former teams.
• Luis Castillo has recorded a win in each of his last four appearances in night games.
• Victor Robles has hit a home run in three of his last four appearances with his team as a home favorite against AL East opponents.
• J.P. Crawford has recorded a Double in three of his last four appearances against the Rays after playing the previous day.
• Cal Raleigh ranks 1st in the league in Home Runs (42) this season.

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.

Mariners vs Rays Prediction

I’m on the Rays in this one. I get the case to be made for either side in this game, and the Mariners looked really solid in that series sweep against the White Sox to start the week. However, Luis Castillo you could argue has been the weak link in this current version of the Mariners’ rotation and I think if there’s a starter that the Rays can get to in this series, it’s Castillo. Drew Rasmussen has been arguably Tampa Bay’s staff ace up to this point in the year, and the Rays still have some hopes of making a run, but they have to take advantage of winnable spots against good teams. I think this qualifies as one of those. Give me Tampa Bay here.