Tampa Bay Rays (70-46) vs. Seattle Mariners (56-62) August 9, 2026 4:10 pm EDT The Line: Seattle Mariners -114 / Tampa Bay Rays 106; Over/Under: 7.5 (Get latest betting odds)
In this article, we will formulate a Rays vs Mariners Prediction for this MLB matchup on Saturday, August 9 th in the third game of this series. Let’s take a look at the prediction for this MLB matchup.
The Seattle Mariners have a 56-62 record this season and are sitting in the 3rd place of the AL West. They have a 33-28 home record and are coming off a 2-3 home loss against the Rays. They will face the Yankees and the Astros next.
The Seattle Mariners have a .229 batting average this season, .308 OBP and .376 Slugging percentage. Seattle’s pitching staff has a 3.78 ERA and 1.20 WHIP. Randy Arozarena is the team’s best hitter with a .279 batting average. Julio Rodriguez leads the team in RBI with 51, adding a team-high 18 home runs.
Emerson Hancock (R) is the projected starting pitcher for the Mariners, and he has a 6-6 record, 3.33 ERA and 1.07 WHIP.
The Tampa Bay Rays have a 70-46 record this season and are sitting in the 1st place of the AL East. They have a 29-28 away record and are coming off a 3-2 road win against the Mariners. They will face the Athletics and the Orioles next.
The Tampa Bay Rays have a .258 batting average this season, .328 OBP and .402 Slugging percentage. Tampa Bay’s pitching staff has a 3.70 ERA and 1.15 WHIP. Chandler Simpson is the team’s best hitter with a .298 batting average. Jonathan Aranda leads the team in RBI with 72, while Junior Caminero adds a team-high 33 home runs.
Ian Seymour (L) is the projected starting pitcher for the Rays, and he has a 8-3 record, 4.27 ERA and 1.13 WHIP.
The Rays are 7-2 in their last 9 meetings against the Mariners and have won their last two visits in Seattle.
In this Rays vs Mariners Prediction, the Mariners are coming as -115 home favorites. I have to stick with the Rays in this series, as they have been the far better team lately and will be facing a struggling Emerson Hancock, who has given up 8 runs across his last three starts. On the flip side, Seymour has given up just four runs in his last three starts and he will face a terrible Mariners offense that averages just 1.8 runs per game against lefties in their last 5 games. Take the Rays in this one.