Rays vs Mariners Prediction 9/1/25 MLB Picks Today

The Seattle Mariners and Tampa Bay Rays meet Monday in MLB action at George M. Steinbrenner Field. Here’s a Rays vs Mariners Prediction. This article will include a Rays vs Mariners Pick.

Seattle Mariners Betting Preview

The Seattle Mariners are 73-64 on the year and play the Braves, Cardinals, and Angels next. The Seattle Mariners are batting .242 on the season, have a .318 OBP, and a .410 slugging percentage. The Seattle Mariners pitching staff has a 3.96 ERA and a 1.25 WHIP. Julio Rodriguez leads the Seattle Mariners with 149 hits and 78 RBI, while JP Crawford and Randy Arozarena have combined for 252 hits and 112 RBI.

Luis Castillo gets the ball for the Seattle Mariners, and he is 8-7 with a 3.75 ERA and 133 strikeouts this season. Castillo is 2-1 with a 3.16 ERA and 35 strikeouts in his career against the Tampa Bay Rays.

Tampa Bay Rays Betting Preview

The Tampa Bay Rays are 67-69 on the year and play the Guardians, White Sox, and Cubs next. The Tampa Bay Rays are batting .250 on the season, have a .312 OBP, and a .401 slugging percentage. The Tampa Bay Rays pitching staff has a 3.89 ERA and a 1.21 WHIP. Yandy Diaz leads the Tampa Bay Rays with 143 hits and 74 RBI while Junior Caminero and Jonathan Aranda have combined for 243 hits and 148 RBI.

Shane Baz gets the ball for the Tampa Bay Rays, and he is 8-11 with a 5.19 ERA and 150 strikeouts this season. This will be Baz’s first career game against the Seattle Mariners.

Why the Tampa Bay Rays will win

• The Mariners have lost each of their last five games as favorites following a road win.
• The Rays have won eight of their last 12 games as home underdogs against AL West opponents following a win.
• The Mariners have failed to cover the run line in each of their last seven road games following a win.
• The Rays have covered the run line in five of their last six games as home underdogs against the Mariners.
• The Rays have led after 3 innings in each of their last four games.
• The Rays have won the first inning in three of their last four night games against AL West opponents that held a winning record.
• The Rays have led after 5 innings in seven of their last eight games.

Why the Seattle Mariners will win

• The Rays have lost each of their last eight games against American League opponents that held a winning record.
• The Mariners have won each of their last four games against the Rays.
• The Rays have failed to cover the run line in each of their last 10 home games against American League opponents after playing the previous day.
• The Mariners have covered the run line in each of their last eight Monday games against the Rays.
• The Rays have lost the first inning in each of their last four games against opponents that held a winning record.
• The Rays have trailed after 5 innings in each of their last four games against opponents that held a winning record.
• The Rays have trailed after 3 innings in each of their last four games against opponents that held a winning record.

Tampa Bay Rays Player Prop Facts

• Brandon Lowe has hit a home run in three of the Rays’ last four games.
• Brandon Lowe has recorded at least one hit in each of his last eight appearances in night games against AL West teams that held a winning record.
• Yandy Diaz has recorded a Double in each of the Rays’ last three games against AL opponents.
• Chandler Simpson ranks 2nd in the league in Steals (38) this season.

Seattle Mariners Player Prop Facts

• Cal Raleigh has hit a home run in each of the Mariners’ last three games against the Rays.
• Luis Castillo has recorded five or more strikeouts in 12 of his last 13 Monday appearances.
• Randy Arozarena has recorded at least one hit in each of his last 12 appearances against former teams.
• Luis Castillo has recorded a win in three of his last four appearances with the Mariners as road favorites against AL East opponents.
• J.P. Crawford has recorded a Double in three of the Mariners’ last four road games against the Rays.
• Cal Raleigh ranks 1st in the league in Home Runs (50) this season.

Rays vs Mariners Prediction

We know what Castillo is capable of when he’s right, but he’s allowed 33 hits and 18 runs in his last 24.1 innings. Castillo has allowed 15 hits and eight runs while walking five in his last nine innings. In 64.1 road innings, Castillo has a 5.04 ERA and .320 allowed batting average. Baz has a 5.19 ERA and 1.35 WHIP on the season, and in his last 25 innings he allowed 29 hits and 22 earned runs. In 66.1 home innings, Baz has a 7.06 ERA and .284 allowed batting average. A lot of ugly numbers here, folks. I expect some fireworks. Give me the over.