MLB Prediction: Seattle Mariners vs Tampa Bay Rays (Monday, September 1 at 07:35 PM ET)
Introduction
| Market / Trend | SEA | TB |
|---|---|---|
| Moneyline | -130 | +105 |
| Total (O/U) | 8.5 | |
| Run Line | -1.5 (143) | +1.5 (-170) |
| Last 5 RPG | 4.2 | 3.6 |
| Record | 72–64 | 66–69 |
| Lines: BetOnline.ag, BetRivers, BetUS, Bovada +5 more | ||
More MLB picks: Seattle Mariners · Tampa Bay Rays
Seattle Mariners’ consistency against Tampa Bay has been decisive, as the Mariners have taken three straight head-to-head meetings while holding the Rays to an average of just 3 runs per game. This matchup analysis points to another edge for Seattle, with their balanced attack and superior season record providing a clear betting angle. With the Rays averaging only 3.6 runs per game over their last five, offensive inconsistency continues to weigh them down against a Mariners lineup that has proven more reliable in tight contests.
Game Time
Opening pitch at Monday, September 1 at 07:35 PM ET at Tropicana Field, unders find support.
Odds & Spread Line
- Seattle Mariners: -130
- Tampa Bay Rays: +105
Total: 8.5
- Run Line — Seattle Mariners: -1.5 (+143)
- Run Line — Tampa Bay Rays: +1.5 (-170)
Latest Team Records
Seattle Mariners: 72-64 (Win %: 0.529)
Tampa Bay Rays: 66-69 (Win %: 0.489)
Injury Report
Seattle Mariners are missing Gregory Santos (Knee), listed as 60-Day-IL; Trent Thornton (Achilles), listed as 60-Day-IL.
The Tampa Bay Rays are currently healthy with no major injury concerns.
Key Player Stats
Seattle Mariners
- Cal Raleigh: 0.241 AVG, 50 HR, 107 RBI
- Eugenio Suarez: 0.235 AVG, 42 HR, 105 RBI
- Julio Rodriguez: 0.264 AVG, 26 HR, 76 RBI
Tampa Bay Rays
- Junior Caminero: 0.256 AVG, 39 HR, 94 RBI
- Yandy Diaz: 0.284 AVG, 22 HR, 74 RBI
- Brandon Lowe: 0.264 AVG, 27 HR, 67 RBI
Team Analysis
Seattle Mariners
The Mariners enter with a 72-64 record, reflecting consistency across the season and a lineup that has delivered when needed. Their last 5 games produced a 2-3 mark with 4.2 runs per game, showing a neutral rhythm but enough scoring balance to remain competitive. Cal Raleigh’s power production continues to anchor the order, giving Seattle a reliable run threat even when overall team output is steady rather than explosive.
Over the last 10 games, Seattle has split results at 5-5 while averaging 4.7 runs, which positions them as a steady but opportunistic side. Eugenio Suarez provides additional pop that stretches the lineup, while Julio Rodriguez’s all-around offensive game adds another layer of pressure. Even with a 32-37 away record, their recent head-to-head dominance over Tampa Bay points to a confidence advantage that translates directly into betting value.
- Batting Average: 0.241
- Total Runs Scored: 623
- Home Runs: 194
- OBP: 0.317
- SLG: 0.411
- OPS: 0.728
- ERA: 3.98
- WHIP: 1.26
Away Record: 32-37 • Home Record: 41-27
Last 5 Games: 2-3 (4.2 RPG)
Last 10 Games: 5-5 (4.7 RPG)
Tampa Bay Rays
The Rays sit at 66-69, reflecting a season of uneven performances that has kept them below the .500 mark. Their last 5 games produced a 3-2 record at 3.6 runs per game, highlighting a lineup that is struggling to generate consistent offense. Junior Caminero supplies the most reliable power, but the lack of depth scoring keeps Tampa Bay from sustaining momentum against tougher pitching staffs.
Over their last 10 outings, the Rays are 6-4, averaging 5.2 runs, but their 34-33 home record shows they remain only marginally effective at Tropicana Field. Yandy Diaz brings contact stability, while Brandon Lowe adds intermittent power, yet the group has not consistently translated production into series wins. Against a Mariners team that has already beaten them three straight times, Tampa Bay Rays’ offensive inconsistency becomes a critical liability.
- Batting Average: 0.25
- Total Runs Scored: 604
- Home Runs: 153
- OBP: 0.313
- SLG: 0.401
- OPS: 0.714
- ERA: 3.92
- WHIP: 1.21
Away Record: 33-36 • Home Record: 34-33
Last 5 Games: 3-2 (3.6 RPG)
Last 10 Games: 6-4 (5.2 RPG)
Head-to-Head History
Seattle Mariners lead 3–0 (Last 3 games)
- August 10, 2025: TB 3 @ SEA 6
- August 09, 2025: TB 4 @ SEA 7
- August 08, 2025: TB 2 @ SEA 3
Over/Under Trends
Seattle Mariners’ last 10 games have averaged 9.3 total runs, with 5 games that would have cleared today’s total of 8.5.
Tampa Bay Rays’ last 10 games have averaged 8.6 combined runs, with 6 games clearing the same number of 8.5.
Moneyline Betting Prediction
Seattle Mariners’ superior season record, combined with their sweep of Tampa Bay in the last three matchups, demonstrates a clear edge in both confidence and execution. With consistent production from Cal Raleigh and Eugenio Suarez anchoring the lineup, Seattle Mariners’ offensive reliability aligns with their proven ability to control this matchup, making them the sharper side to back.
Form and matchup edges favor the Seattle Mariners — back them.
Over/Under Prediction
In their last five, the Tampa Bay Rays have produced 3.6 RPG and the Seattle Mariners 4.2. That output frames how this total sets up.
These teams are combining for 7.8 runs per game recently — below the posted total of 8.5. That points toward the Under 8.5.
Bookmakers
Current MLB odds sourced from: FanDuel, MyBookie.ag, BetOnline.ag, LowVig.ag, Caesars, DraftKings, BetUS, Bovada, BetRivers.
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MLB Predictions FAQ
What do moneyline, run line, and total mean?
Moneyline is who wins the game. Run line is a spread, usually ±1.5 runs. The total (over/under) is combined runs by both teams.
What’s a good price range for today’s pick (Sep 01, 2025)?
We list a target price in the post. If the market moves past that number, reduce stake size or pass instead of chasing worse odds.
