Seattle Mariners vs Tampa Bay Rays Picks and Predictions for Wednesday, September 3, 2025

By: David Anicetti Published 09/03/2025, 12:05 AM ET

Mariners Preview

The Seattle Mariners complete a three-game series on the road Wednesday versus the Tampa Bay Rays. Seattle is 73-65 following Monday’s 10-2 loss to Tampa Bay in the opening game of the series. Seattle has lost three of the last four. The Mariners are second in the American League West, three games behind the first-place Houston Astros, and currently hold one of the top three AL wild card spots. Keep up to date with all the MLB action with our MLB predictions.

Julio Rodriguez is batting .264 with 149 hits to lead Seattle in both categories. Cal Raleigh leads in home runs with 50, RBI with 107, and on-base percentage at .354. Randy Arozarena and Rodriguez are tied for second in home runs with 26 each. Seattle is batting .242 with a .411 slugging percentage. On Wednesday, Seattle will send George Kirby to the mound. The right-hander is 8-6 with a 3.94 ERA, 103 Ks, and 26 BBs.

Rays Preview

The Tampa Bay Rays are 68-69 following Monday’s eight-run win over Seattle in the opening game of the series. Shane Baz pitched six scoreless innings for the Rays to end his losing streak of eight games. Tampa Bay has won four straight. The Rays are 10.5 games behind first place in the American League East and trail the third and final AL wild card spot by 4.5 games.

Yandy Diaz is batting .286 with 145 hits and an on-base percentage of .345 to lead Tampa Bay in each of the three categories. Junior Caminero leads in home runs with 39 and RBI with 96. Tampa Bay is batting .251 with a .403 slugging percentage. On Wednesday, Tampa Bay will send Adrian Houser to the mound. The right-hander is 7-4 with a 2.85 ERA, 66 Ks, and 31 BBs.

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Rays vs Mariners Betting Trends

Seattle is 6-2 in its last 8 versus Tampa Bay
The UNDER has cashed in 7 of the Mariners’ last 10 vs an AL opponent
Tampa Bay is 7-2 in its last 9
The OVER has cashed in 13 of the Rays’ last 20

Rays vs Mariners Betting Pick

Seattle will pick up a victory on the road Wednesday when visiting Tampa Bay, but the play here is UNDER. The UNDER has cashed in seven of Seattle's last 10 versus an American League opponent. Seattle starter George Kirby has had two consecutive strong outings, allowing three runs on 10 hits across 13 innings. Tampa Bay starter Adrian Houser is coming off a strong outing in which the right-hander allowed one run on six hits across four innings. Final Score Prediction: Seattle Mariners win but our best play is UNDER 4-2.

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