Tampa Bay Rays vs Seattle Mariners Prediction & Picks - MLB

USA - MLB

Tampa Bay Rays
8/8/25 21:40
Seattle Mariners

Prediction:

 

Tampa Bay Rays win both halves

+112
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 by Erik Gibbs in MLB Picks

The Seattle Mariners will host the Tampa Bay Rays this afternoon. The Mariners (63-53) come into this series as among the hottest clubs in the league, having been winners of four straight games. The Mariners just completed a series sweep of the White Sox and now find themselves ten games above .500, solidly within the AL playoffs.

Seattle has been clicking on both sides of the ball: throughout this stretch their offense has been generating approximately five runs per game while their pitching staff remains within the league's better units. The Mariners also come out swinging on the road, making T-Mobile Park a challenging visit for away clubs.

Rays (57-59) have had a roller-coaster season sitting right on the .500 line. They do come into town, however, with a bit of momentum after back-to-back wins, including a 5-4 victory over the Angels last weekend to conclude their last series. The Rays offense certainly has the ability to make some trouble. Twenty-year-old rookie Junior Caminero has seemingly come out of nowhere with a league-leading 30 homers and 76 RBIs, lending much-needed pop to the middle of the order.

He’s supported by experienced hitters like Yandy Díaz (a high-average, 20-homer bat) and Brandon Lowe (another 20-homer hitter) in a lineup that can explode on a given night, though consistency has been an issue.

Tampa Bay Rays vs Seattle Mariners Form

Table

Teams % P W L
11
Seattle Mariners
Seattle Mariners
0.543 116 63 53
19
Tampa Bay Rays
Tampa Bay Rays
0.491 116 57 59

Tampa Bay Rays and Seattle Mariners Latest Matches

Tampa Bay Rays
Tampa Bay Rays Latest matches
L W L L W W
Victories

3/6 (50%)

Defeats

3/6 (50%)

Aug 6, 2025 - MLB

Tampa Bay Rays
5 :  4
Los Angeles Angels

Aug 5, 2025 - MLB

Tampa Bay Rays
7 :  3
Los Angeles Angels

Aug 4, 2025 - MLB

Tampa Bay Rays
1 :  5
Los Angeles Angels

Aug 3, 2025 - MLB

Los Angeles Dodgers
3 :  0
Tampa Bay Rays

Aug 2, 2025 - MLB

Los Angeles Dodgers
0 :  4
Tampa Bay Rays

Aug 1, 2025 - MLB

Los Angeles Dodgers
5 :  0
Tampa Bay Rays
L W L L W L
Victories

2/6 (33%)

Defeats

4/6 (67%)

Aug 3, 2025 - MLB

Los Angeles Dodgers
3 :  0
Tampa Bay Rays

Aug 2, 2025 - MLB

Los Angeles Dodgers
0 :  4
Tampa Bay Rays

Aug 1, 2025 - MLB

Los Angeles Dodgers
5 :  0
Tampa Bay Rays

Jul 23, 2025 - MLB

Chicago White Sox
11 :  9
Tampa Bay Rays

Jul 22, 2025 - MLB

Chicago White Sox
3 :  4
Tampa Bay Rays

Jul 21, 2025 - MLB

Chicago White Sox
8 :  3
Tampa Bay Rays
L L L L W W
Victories

2/6 (33%)

Defeats

4/6 (67%)

Aug 6, 2025 - MLB

Tampa Bay Rays
5 :  4
Los Angeles Angels

Aug 5, 2025 - MLB

Tampa Bay Rays
7 :  3
Los Angeles Angels

Aug 4, 2025 - MLB

Tampa Bay Rays
1 :  5
Los Angeles Angels

Jul 31, 2025 - MLB

Tampa Bay Rays
4 :  7
New York Yankees

Jul 30, 2025 - MLB

Tampa Bay Rays
4 :  5
New York Yankees

Jul 29, 2025 - MLB

Tampa Bay Rays
5 :  7
New York Yankees
Seattle Mariners
Seattle Mariners Latest matches
W L W W W W
Victories

5/6 (83%)

Defeats

1/6 (17%)

Aug 7, 2025 - MLB

Chicago White Sox
3 :  4
Seattle Mariners

Aug 6, 2025 - MLB

Chicago White Sox
6 :  8
Seattle Mariners

Aug 5, 2025 - MLB

Chicago White Sox
3 :  8
Seattle Mariners

Aug 3, 2025 - MLB

Texas Rangers
4 :  5
Seattle Mariners

Aug 2, 2025 - MLB

Texas Rangers
6 :  4
Seattle Mariners

Aug 1, 2025 - MLB

Texas Rangers
3 :  4
Seattle Mariners
W L W W W W
Victories

5/6 (83%)

Defeats

1/6 (17%)

Aug 7, 2025 - MLB

Chicago White Sox
3 :  4
Seattle Mariners

Aug 6, 2025 - MLB

Chicago White Sox
6 :  8
Seattle Mariners

Aug 5, 2025 - MLB

Chicago White Sox
3 :  8
Seattle Mariners

Aug 3, 2025 - MLB

Texas Rangers
4 :  5
Seattle Mariners

Aug 2, 2025 - MLB

Texas Rangers
6 :  4
Seattle Mariners

Aug 1, 2025 - MLB

Texas Rangers
3 :  4
Seattle Mariners
L L W W L L
Victories

2/6 (33%)

Defeats

4/6 (67%)

Jul 30, 2025 - MLB

Seattle Mariners
4 :  5
Athletics

Jul 29, 2025 - MLB

Seattle Mariners
1 :  6
Athletics

Jul 28, 2025 - MLB

Seattle Mariners
3 :  1
Athletics

Jul 27, 2025 - MLB

Seattle Mariners
1 :  4
Los Angeles Angels

Jul 26, 2025 - MLB

Seattle Mariners
7 :  2
Los Angeles Angels

Jul 25, 2025 - MLB

Seattle Mariners
2 :  3
Los Angeles Angels

Tampa Bay Rays against Seattle Mariners : Head to Head (H2H)

Tampa Bay Rays

50 %

Seattle Mariners

50 %

Aug 28, 2024 - MLB

Tampa Bay Rays
2 :  6
Seattle Mariners

Aug 27, 2024 - MLB

Tampa Bay Rays
3 :  2
Seattle Mariners

Aug 26, 2024 - MLB

Tampa Bay Rays
1 :  5
Seattle Mariners

Jun 25, 2024 - MLB

Seattle Mariners
3 :  11
Tampa Bay Rays

Jun 19, 2021 - MLB

Tampa Bay Rays
5 :  6
Seattle Mariners

Aug 21, 2019 - MLB

Seattle Mariners
6 :  7
Tampa Bay Rays

Tampa Bay Rays - Seattle Mariners Key Points

  1. The Rays are 3-2 SU in their last 5 games
  2. The Mariners are 4-1 SU in their last 5 games
  3. The Rays are 6–3 in their last nine vs. the Mariners
  4. The Over is 4-2 in the Mariners' last 6 games vs. AL East teams

Our Tampa Bay Rays vs Seattle Mariners Prediction

This game’s pitching matchup is a big deal. Seattle deploys ace right-hander Luis Castillo (8-6, 3.22 ERA). Castillo is the rotation stalwart of the Mariners and a first-class arm, even if he has been more good than great by turns lately. Standing opposite him is Tampa Bay right-hander Drew Rasmussen (9-5, 2.81 ERA), who has been tremendous this season.

Rasmussen pitches to the strike zone and has been effective against Seattle's order before, so the Mariners will need to fight out at-bats and perhaps capitalize on timely hitting to get to him. Both teams look to the starter to get the ball started for this series opener.

This matchup has the makings of a tight contest. Seattle’s recent form and home-field advantage suggest they should have the upper hand, but Tampa Bay’s edge in the starting pitching department (with Rasmussen) and their urgency to climb back to .500 could tilt the balance. In essentially a toss-up game, the Rays’ slight pitching advantage might be the deciding factor. Our prediction for Seattle Mariners vs. Tampa Bay Rays: Rays to win.

Prediction:

 

Tampa Bay Rays win both halves

+112
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Tampa Bay Rays vs Seattle Mariners Picks