Free MLB Pick: Mariners vs. Rays Odds
Looking for Seattle Mariners vs. Tampa Bay Rays Free MLB predictions? MLB betting sees the Mariners taking on the Rays on 9/1 at George M. Steinbrenner Field, in Tampa Bay. Cappers Picks provides complimentary expert handicapping picks on all MLB baseball matchups all season long so stay tuned for more FREE daily MLB predictions like this Mariners Rays free pick.
2025 MLB Handicapping – Seattle Mariners vs Tampa Bay Rays
(73-64) Seattle Mariners vs. Tampa Bay Rays (67-69)
Date: Sep 01, 2025
Time: 7:35 PM ET
Venue: George M. Steinbrenner Field in Tampa Bay, FL
Projected Starting Pitchers: Luis Castillo vs. Shane Baz
MLB Moneyline Odds: Mariners -116 | Rays -101 (Bet Now!)
Today’s MLB Run Line Betting Odds: Mariners -1.5 | Rays 1.5
MLB Baseball Gambling Total: O/U: 8.5
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Mariners vs. Rays Gameday
Tonight, the Seattle Mariners visit the Tampa Bay Rays at George M. Steinbrenner Field. The Mariners hold a record of 73-64 and are ranked second in the AL West. Meanwhile, the Rays are fourth in the AL East with a 67-69 record.
Seattle recently ended a three-game series against the Cleveland Guardians, winning one of those games. They have a decent road record but could use improvement. Their current streak stands at one win, and they are 5-5 in their last ten games.
On the other hand, the Tampa Bay Rays are on a three-game winning streak. They recently swept the Washington Nationals in a three-game series. In their last ten games, they have won six, showing a slight edge in recent performance.
The Mariners have dominated the head-to-head series this season, winning all three matchups. With a hot day and broken clouds forecasted, both teams will aim to capitalize on the conditions. Tune in at 7:35 PM on FDSSU for what should be an exciting game.
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Seattle Mariners vs. Tampa Bay Rays Odds & Last 5
Notably, the Mariners enter this game with a slight edge from the odds makers. Their moneyline is set at -117, which indicates they are seen as favorites. Meanwhile, the Rays are at -101, suggesting a close contest.
Interestingly, the Mariners have had a mix of outcomes in their recent games. They achieved a win against the Guardians but faced defeats in the games prior. On the other hand, the Rays are riding high on a three-game win streak, having swept the Nationals.
The previous head-to-head matchups favor the Mariners, as they have taken all three games this season. The Mariners outscored the Rays by an average margin of 2.3 runs. With the current weather conditions, this game could be pivotal for both teams.
Rays Stats
First, let’s talk about the Tampa Bay Rays’ hitting performance. They have a batting average of .250, which ranks 7th in the league. Their on-base percentage sits at .311, placing them 14th, while their slugging percentage is .401, ranking 12th. The team has hit 154 home runs, also ranking 14th.
Moreover, the Rays have been active on the bases with 172 stolen bases, which is the best in the league. However, they have struck out 1,166 times, ranking 16th. Their 204 doubles rank 21st, indicating room for improvement in that area.
On the pitching side, the Rays have an earned run average (ERA) of 3.89, ranking 14th in the league. They have limited opponents to a batting average of .236, which is 7th best. However, they have given up 177 home runs, ranking 19th in that category.
Additionally, the Rays’ pitchers have achieved 56 quality starts, ranking 7th. They have blown 22 saves, which ranks 8th. Their pitchers have recorded 1,179 strikeouts, placing them 7th in the league.
Recently, the Rays have been on a roll, winning their last three games against the Washington Nationals. They scored 7-4, 4-1, and 4-1 in those games. Brandon Lowe and Josh Lowe have been key contributors, with Brandon hitting a home run in the most recent game.
Finally, Junior Caminero leads the team with 39 home runs and 94 RBIs. Yandy Díaz has the highest batting average on the team at .284. Jonathan Aranda boasts a .316 average, showing consistency at the plate.
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Mariners Stats
Firstly, the Seattle Mariners are showing a strong performance in the power department. They rank 3rd in the league with 195 home runs. This power surge is a key part of their offense.
Additionally, the Mariners’ on-base skills are notable. With an on-base percentage of .316, they stand at 11th in the league. This ability to get on base helps set up scoring opportunities.
Meanwhile, the Mariners’ pitching staff is holding its own. Their earned run average is 3.96, placing them 17th in the league. This indicates a solid, if not spectacular, performance on the mound.
In terms of recent momentum, the Mariners have been on a rollercoaster ride. They won their last game against the Cleveland Guardians, 4-2. However, they had lost the previous two games against the same team.
Furthermore, Cal Raleigh is a standout player for the Mariners. He leads the team with 50 home runs, ranking 1st in the league. His power at the plate is a crucial element of the team’s success.
Finally, Eugenio Suárez is another key contributor. He has hit 42 home runs, placing him 5th in the league. His consistent power adds depth to the Mariners’ lineup.
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Mariners vs. Rays Pitching Matchup
Seattle Mariners’ starter Luis Castillo has a solid ERA of 3.75. With a win-loss record of 8-7, he has shown consistency on the mound. Additionally, his WHIP of 1.28 indicates he limits baserunners effectively.
Castillo has been reliable this season, often keeping games close. His control and command have been key factors in his performance. Moreover, he has managed to maintain a steady presence in the rotation.
On the other hand, Tampa Bay Rays’ Shane Baz has an ERA of 5.19. His win-loss record stands at 8-11, reflecting some struggles throughout the season. Furthermore, his WHIP of 1.35 suggests he allows more baserunners than desired.
Baz has faced challenges this year, often battling inconsistency. Despite this, he has shown flashes of potential in certain outings. As a result, he remains a pitcher to watch for future development.
Seattle Mariners vs. Tampa Bay Rays Baseball Betting Trends
- The Rays have won 3 of their last 5 games straight-up.
- Also, the Rays have covered the run line in 3 of their last 5 games.
- The total has gone under in 3 of the Rays’ last 5 games.
- The Mariners have won 2 of their last 5 games straight-up.
- Additionally, the Mariners have not covered the run line in 3 of their last 5 games.
- The total has gone over in 3 of the Mariners’ last 5 games.
Mariners vs Rays Prediction: Under 8.5
The Mariners have seen the total go over in three of their last five games. However, the Rays have been trending under, with three of their last five staying below the number. This clash of trends puts the spotlight firmly on the under.
Seattle’s pitching has been steady, carrying a 3.89 ERA that ranks 14th in the league.
Tampa Bay’s arms are right behind at 3.96, good for 17th overall. Both staffs are more than capable of keeping bats in check, which adds weight to the under play.
Head-to-head, the over has cashed in two of the last three meetings. Yet, the Rays’ recent run of lower-scoring games suggests we could see a shift back to tighter contests. That kind of pattern often signals an edge for bettors leaning under.
Given the recent form and the reliability of both pitching staffs, the under looks like the sharper side in this matchup.
Prediction: Under 8.5 – Expect the total to land beneath the mark with both rotations doing enough to limit damage.
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MLB Betting Tweet Of The Day
Pereira puts us on the board! pic.twitter.com/jX65ZptHE2
— Tampa Bay Rays (@RaysBaseball) August 31, 2025
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