• The Mariners are -110 favorites vs the Nationals
• Mariners vs Nationals Over / Under today: 9 Runs
• Mariners / Nationals TV Channel: MRTV | NATV

The Seattle Mariners (-110) visit Nationals Park to take on the Washington Nationals (-110) on June 13, 2026. First pitch is scheduled for 4:05 pm in Washington, DC.

This season, the Mariners are 37-34 against the spread (ATS), while the Nationals are 43-26 ATS.

Mariners vs Nationals Starting Pitchers Today:

• Mariners starting pitcher: Luis Castillo 2-5, 5.20 ERA
• Nationals starting pitcher: Cade Cavalli 3-4, 3.88 ERA

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

Mariners vs Nationals Prediction for Today’s Game

Based on recent trends the model predicts the Nationals will win Saturday‘s MLB game with 54.2% 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 Saturday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Bets Today:

• Colt Emerson has hit the Home Runs Over in 4 of his last 10 games (+25.80 Units / 258% ROI)
• Cole Young has hit the Singles Over in 13 of his last 15 games (+11.70 Units / 67% ROI)
• Cole Young has hit the Hits Over in 13 of his last 15 games (+11.00 Units / 43% ROI)
• Colt Emerson has hit the Runs Over in 7 of his last 9 away games (+8.00 Units / 89% ROI)
• Mitch Garver has hit the Hits Runs and RBIs Over in 8 of his last 10 away games (+7.05 Units / 63% ROI)

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

Best Nationals Player Prop Best Bets Today:

• Jacob Young has hit the Home Runs Over in 3 of his last 10 games at home (+28.00 Units / 280% ROI)
• Luis Garcia has hit the Hits Under in 17 of his last 25 games at home (+16.71 Units / 50% ROI)
• Luis Garcia has hit the Runs Under in 14 of his last 15 games at home (+12.55 Units / 50% ROI)
• Keibert Ruiz has hit the Total Bases Over in 16 of his last 20 games (+10.65 Units / 34% ROI)
• CJ Abrams has hit the RBIs Under in his last 8 games at home (+8.00 Units / 46% ROI)

Mariners Best Bets Today:

• The Seattle Mariners have covered the Run Line in 27 of their last 50 away games (+9.10 Units / 16% ROI)
• The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 13 of their last 19 away games (+7.15 Units / 34% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 20 of their last 35 games (+7.05 Units / 14% ROI)
• The Seattle Mariners have hit the Moneyline in 12 of their last 17 games (+6.15 Units / 29% ROI)
• The Seattle Mariners have hit the Game Total Over in 7 of their last 10 games (+5.05 Units / 46% ROI)

Nationals Best Bets Today:

• The Washington Nationals have covered the 1st Five Innings (F5) Run Line in 36 of their last 50 games (+19.90 Units / 33% ROI)
• The Washington Nationals have hit the 1st Five Innings (F5) Moneyline in 28 of their last 50 games (+15.50 Units / 29% ROI)
• The Washington Nationals have hit the Game Total Over in 27 of their last 40 games at home (+15.20 Units / 35% ROI)
• The Washington Nationals have hit the 1st Five Innings (F5) Team Total Over in 31 of their last 50 games (+9.20 Units / 15% ROI)
• The Washington Nationals have hit the Moneyline in 22 of their last 40 games (+7.85 Units / 19% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 28-43 against the Run Line (-8 Units / -10.69% ROI).

• 37-34 when betting on the Moneyline for -8.1 Units / -8.32% ROI
• 34-34 when betting on the total runs Over for -3.1 Units / -3.97% ROI
• 34-34 when betting on the total runs Under for -3.3 Units / -4.22% ROI

Nationals Against the Spread (ATS) Record

Against the spread this season, the Nationals are 43-26 against the Run Line (+9.15 Units / 9.24% ROI).

• 35-35 when betting on the Moneyline for +9.8 Units / 13.65% ROI
• 43-24 when betting on the total runs Over for +16.9 Units / 21.95% ROI
• 24-43 when betting on the total runs Under for -23.15 Units / -30.05% ROI

Nationals vs Mariners Home Run Prop Bets Today

Nationals vs Mariners Total Hits Prop Bets Today

Nationals vs Mariners Strikeout Prop Bets Today

Mariners Keys to the Game vs. the Nationals

The Mariners are 14-6 (.700) vs top 10 scoring offenses this season Today, they face the Nationals (second in runs scored).

The Mariners are 24-9 (.727) vs the bottom 10 runs allowed teams this season Today, they face the Nationals (29th runs allowed).

The Mariners are 21-5 (.808) when they’ve hit 2 or more home runs this season — 5th best in MLB; League Avg: .703.

The Mariners are 25-15 (.625) when tied entering the 7th inning since the 2025 season — tied for 2nd best in MLB; League Avg: .500.

Nationals Keys to the Game vs. the Mariners

The Nationals are just 26-7 (.788) when leading entering the 7th inning this season — 5th lowest in MLB; League Avg: .857.

The Nationals are just 12-21 (.364) at home this season — 2nd lowest in MLB; League Avg: .530.

The Nationals are just 1-28 (.034) when trailing entering the 8th inning this season — 5th lowest in MLB; League Avg: .108.

The Nationals are just 43-70 (.377) at home since the 2025 season — 2nd lowest in MLB; League Avg: .539.

Mariners Hitting Stats & Trends

Mariners hitters are slugging just .336 against LHP this season — lowest in MLB.

Mariners hitters have an OPS of just .625 (773 PA’s) against LHP this season — lowest in MLB.

The Mariners are batting just .211 against LHP this season — lowest in MLB.

The Mariners are batting .286 when facing the starting pitcher for the 3rd time in a game this season — 2nd best in MLB.

Nationals Hitting Stats & Trends

The Nationals are batting just .195 when facing the starting pitcher for the 3rd time in a game this season — lowest in MLB.

Nationals hitters have an OBP of just .268 (328 PA’s) when facing the starting pitcher for the 3rd time in a game this season — lowest in MLB.

The Nationals have scored 124 runs in innings 7-9 this season — most in MLB.

The Nationals have scored 124 runs in late innings this season — most in MLB.

Mariners Pitching Stats & Trends

Mariners pitchers have a first-pitch strike rate of 67% this season — highest in MLB.

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

Nationals Pitching Stats & Trends

Opponents have a miss rate of just 22% against Nationals pitchers this season — lowest in MLB.

Nationals pitchers have a strikeout rate of just 19% this season — 3rd lowest in MLB.

Nationals pitchers have a strikeout rate of just 37% with two-strikes this season — lowest in MLB.

Nationals pitchers have an ERA of 5.39 (304.0 IP) at home this season — 3rd 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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