• The Rays are -145 favorites vs the Mariners
• Mariners vs Rays Over / Under today: 7.5 Runs
• Mariners / Rays TV Channel: MRTV | RATV

The Seattle Mariners (+120) visit Tropicana Field to take on the Tampa Bay Rays (-145) on July 12, 2026. First pitch is scheduled for 1:40 pm in St. Petersburg, FL.

This season, the Mariners are 47-49 against the spread (ATS), while the Rays are 55-38 ATS.

Mariners vs Rays Starting Pitchers Today:

• Mariners starting pitcher: Emerson Hancock 6-4, 3.24 ERA
• Rays starting pitcher: Ian Seymour 6-1, 4.14 ERA

Mariners vs. Rays Odds, Run Line, Over/Under & Moneyline

Mariners vs Rays Prediction for Today’s Game

Based on recent trends the model predicts the Rays will win Sunday‘s MLB game with 55.4% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.

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We’ve highlighted some favorite MLB player prop bets for Mariners players for Sunday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Bets Today:

• J.P. Crawford has hit the Walks Under in 21 of his last 25 away games (+15.30 Units / 41% ROI)
• Cole Young has hit the Home Runs Over in 2 of his last 5 games (+12.00 Units / 240% ROI)
• Josh Naylor has hit the Singles Over in 19 of his last 25 away games (+10.85 Units / 33% ROI)
• Colt Emerson has hit the Hits Runs and RBIs Under in 15 of his last 20 games (+10.25 Units / 40% ROI)
• Cal Raleigh has hit the RBIs Under in 13 of his last 15 away games (+9.00 Units / 31% ROI)

And here are some favorite MLB player prop bets for Rays players for Sunday‘s game, looking at profitable historical betting trends:

Best Rays Player Prop Best Bets Today:

• Richie Palacios has hit the Home Runs Over in 2 of his last 6 games (+16.00 Units / 267% ROI)
• Jonathan Aranda has hit the Total Bases Over in 17 of his last 25 games at home (+12.15 Units / 42% ROI)
• Junior Caminero has hit the Singles Under in 16 of his last 20 games (+11.45 Units / 48% ROI)
• Yandy Diaz has hit the Runs Over in 15 of his last 20 games at home (+10.10 Units / 46% ROI)
• Chandler Simpson has hit the Hits Over in 16 of his last 20 games (+9.25 Units / 22% ROI)

Mariners Best Bets Today:

• The Seattle Mariners have hit the Team Total Under in 33 of their last 50 away games (+12.95 Units / 22% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 17 of their last 24 games (+9.40 Units / 32% ROI)
• The Seattle Mariners have hit the Game Total Over in 15 of their last 25 away games (+6.55 Units / 24% ROI)

Rays Best Bets Today:

• The Tampa Bay Rays have covered the Run Line in 33 of their last 50 games at home (+25.05 Units / 43% ROI)
• The Tampa Bay Rays have hit the Moneyline in 36 of their last 50 games at home (+17.25 Units / 26% ROI)
• The Tampa Bay Rays have hit the Team Total Over in 33 of their last 50 games at home (+13.10 Units / 22% ROI)
• The Tampa Bay Rays have hit the 1st Five Innings (F5) Team Total Over in 26 of their last 40 games at home (+12.60 Units / 27% ROI)
• The Tampa Bay Rays have covered the 1st Five Innings (F5) Run Line in 32 of their last 50 games at home (+12.55 Units / 22% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 38-58 against the Run Line (-11.7 Units / -11.26% ROI).

• 47-49 when betting on the Moneyline for -16.05 Units / -12.29% ROI
• 46-46 when betting on the total runs Over for -4.4 Units / -4.15% ROI
• 46-46 when betting on the total runs Under for -4.35 Units / -4.13% ROI

Rays Against the Spread (ATS) Record

Against the spread this season, the Rays are 55-38 against the Run Line (+25.05 Units / 22.23% ROI).

• 56-37 when betting on the Moneyline for +13.15 Units / 11.38% ROI
• 41-47 when betting on the total runs Over for -10.45 Units / -10.26% ROI
• 47-41 when betting on the total runs Under for +1.65 Units / 1.61% ROI

Mariners Keys to the Game vs. the Rays

The Mariners are just 7-19 (.269) vs the top 10 runs allowed teams this season Today, they face Rays (ninth in runs allowed).

The Mariners are just 1-39 (.025) when trailing entering the 8th inning this season — 4th lowest in MLB; League Avg: .097.

The Mariners are just 1-43 (.023) when trailing entering the 9th inning this season — 4th lowest in MLB; League Avg: .053.

The Mariners are 27-15 (.643) when tied entering the 7th inning since the 2025 season — best in MLB; League Avg: .500.

Rays Keys to the Game vs. the Mariners

The Rays are 35-14 (.714) at home this season — best in MLB; League Avg: .523.

The Rays are 9-29 (.237) when trailing entering the 7th inning this season — 2nd best in MLB; League Avg: .135.

The Rays are 30-9 (.769) vs bottom 10 scoring offenses this season Today, they face the Mariners (28th in runs scored).

The Rays are 37-18 (.673) after a win this season — best in MLB; League Avg: .515.

Mariners Hitting Stats & Trends

The Mariners are batting just .208 against LHP this season — lowest in MLB.

Mariners hitters have an OPS of just .652 (1,125 PA’s) in innings 7-9 this season — 3rd lowest in MLB.

Mariners hitters are slugging just .328 against LHP this season — lowest in MLB.

Mariners hitters are slugging just .378 this season — 3rd lowest in MLB.

Rays Hitting Stats & Trends

Rays hitters have struck out in just 18% of their PA’s against LHP this season — 3rd best in MLB.

Rays hitters are slugging .290 on pitches out of the zone this season — best in MLB.

Rays hitters have 241 extra-base hits out of 807 total hits (just 30%) this season — lowest in MLB.

The Rays are batting .208 on pitches out of the zone this season — best in MLB.

Mariners Pitching Stats & Trends

Mariners pitchers have walked 6% of batters when facing the leadoff batter in the inning this season — best in MLB.

Mariners pitchers have walked 7% of batters this season — best in MLB.

Mariners pitchers have a first-pitch strike rate of 66% this season — highest in MLB.

Mariners pitchers have thrown at least two strikes in their first three pitches to 69% of opposing batters this season — highest in MLB.

Rays Pitching Stats & Trends

Opponents have a groundball rate of just 40% against Rays pitchers this season — tied for 4th lowest in MLB.

Rays pitchers have walked 6% of batters when facing the leadoff batter in the inning this season — 2nd best in MLB.

Rays pitchers have walked 7% of batters this season — 2nd best in MLB.

Rays pitchers have a first-pitch strike rate of 64% this season — 2nd highest in MLB.

More MLB Reading:

• Home Run Predictions Today
• Best NRFI Bets Today
• Strikeout Props Today
• MLB Starting Pitchers Today

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