Nationals vs Mariners Prediction, Odds & Player Prop Bets Today – MLB, May 27

Seattle Mariners designated hitter Mitch Haniger, left, follows through on a home run against the Cleveland Guardians during the first inning of a spring training baseball game Sunday, Feb. 25, 2024, in Peoria, Ariz. (AP Photo/Lindsey Wasson)
(AP Photo/Lindsey Wasson)
  • The Mariners are -165 favorites vs the Nationals
  • Nationals vs Mariners Over / Under today: 8 Runs
  • Nationals / Mariners TV Channel: MAS2 | RTNW | MLBN

The Washington Nationals (+135) visit T-Mobile Park to take on the Seattle Mariners (-165) on Tuesday, May 27, 2025. First pitch is scheduled for 9:40pm EDT in Seattle, WA.

This season, the Nationals are 24-29 against the spread (ATS), while the Mariners are 26-26 ATS.

Nationals vs Mariners Starting Pitchers Today:

  • Nationals starting pitcher: Mitchell Parker 4-3, 4.37 ERA
  • Mariners starting pitcher: Logan Evans 2-1, 3.30 ERA

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

SpreadOver / UnderMoneyline
Nationals+1.5 -170O 8.5 -110+135
Mariners -1.5 +140U 8.5 -110-165

Nationals vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Mariners will win Tuesday‘s MLB game with 56.7% 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 Nationals players for Tuesday‘s game, looking at profitable historical betting trends:

Best Nationals Player Prop Bets Today:

  • Luis Garcia has hit the Home Runs Over in 2 of his last 4 away games (+14.75 Units / 369% ROI)
  • James Wood has hit the Hits Over in 20 of his last 25 games (+10.45 Units / 22% ROI)
  • Nate Lowe has hit the Walks Under in 13 of his last 15 games (+9.70 Units / 35% ROI)
  • CJ Abrams has hit the Total Bases Over in 11 of his last 15 away games (+8.45 Units / 50% ROI)
  • Jose Tena has hit the Runs Over in 5 of his last 6 games (+6.60 Units / 110% ROI)

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

Best Mariners Player Prop Best Bets Today:

  • Julio Rodriguez has hit the Hits Over in 17 of his last 25 games (+12.00 Units / 28% ROI)
  • Randy Arozarena has hit the Walks Under in 13 of his last 15 games (+9.70 Units / 34% ROI)
  • J.P. Crawford has hit the Singles Over in 17 of his last 25 games (+9.45 Units / 34% ROI)
  • Leonardo Rivas has hit the Hits Runs and RBIs Over in 12 of his last 15 games (+8.50 Units / 39% ROI)
  • Leonardo Rivas has hit the Runs Over in his last 4 games at home (+8.10 Units / 203% ROI)
  • The Washington Nationals have hit the Team Total Under in 23 of their last 37 games (+7.89 Units / 18% ROI)
  • The Washington Nationals have hit the 1st Five Innings (F5) Team Total Under in 17 of their last 26 away games (+7.35 Units / 24% ROI)
  • The Washington Nationals have hit the Game Total Under in 22 of their last 37 games (+7.30 Units / 18% ROI)
  • The Washington Nationals have hit the Moneyline in 7 of their last 10 games (+6.45 Units / 63% ROI)
  • The Washington Nationals have covered the Run Line in 7 of their last 9 away games (+5.35 Units / 45% ROI)
  • The Seattle Mariners have hit the Game Total Over in 12 of their last 15 games at home (+8.80 Units / 54% ROI)
  • The Seattle Mariners have hit the Team Total Over in 28 of their last 46 games (+8.15 Units / 15% ROI)
  • The Seattle Mariners have hit the Moneyline in 25 of their last 40 games (+7.35 Units / 14% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Over in 27 of their last 46 games (+6.65 Units / 12% ROI)
  • The Seattle Mariners have covered the Run Line in 22 of their last 40 games (+4.90 Units / 10% ROI)

Nationals Against the Spread (ATS) Record

Against the spread this season, the Nationals are 28-25 against the Run Line (-1.75 Units / -2.56% ROI).

  • 24-29 when betting on the Moneyline for -0.02 Units / -0.04% ROI
  • 24-27 when betting on the total runs Over for -5.35 Units / -9.24% ROI
  • 27-24 when betting on the total runs Under for +0.45 Units / 0.77% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 26-26 against the Run Line (+0.2 Units / 0.31% ROI).

  • 29-23 when betting on the Moneyline for +1 Units / 1.45% ROI
  • 27-23 when betting on the total runs Over for +1.5 Units / 2.63% ROI
  • 23-27 when betting on the total runs Under for -7.02 Units / -12.23% ROI

Mariners vs Nationals Home Run Prop Bets Today

Over Under
Cal Raleigh (SEA) 0.5 +240 0.5 -300
James Wood (WAS) 0.5 +400 0.5 -550
Randy Arozarena (SEA) 0.5 +400 0.5 -525
CJ Abrams (WAS) 0.5 +400 0.5 -550
Julio Rodriguez (SEA) 0.5 +425 0.5 -625

Mariners vs Nationals Total Hits Prop Bets Today

Over Under
CJ Abrams (WAS) 0.5 -250 0.5 +185
Luis Garcia (WAS) 0.5 -225 0.5 +175
Cal Raleigh (SEA) 0.5 -225 0.5 +170
Nathaniel Lowe (WAS) 0.5 -210 0.5 +155
J.P. Crawford (SEA) 0.5 -190 0.5 +145

Mariners vs Nationals RBI Prop Bets Today

Over Under
Cal Raleigh (SEA) 0.5 +135 0.5 -175
Randy Arozarena (SEA) 0.5 +155 0.5 -200
Julio Rodriguez (SEA) 0.5 +165 0.5 -220
CJ Abrams (WAS) 0.5 +170 0.5 -225
Nathaniel Lowe (WAS) 0.5 +175 0.5 -225

Mariners vs Nationals Strikeout Prop Bets Today

Over Under
Mitchell Parker (WAS) 4.5 -105 4.5 -120
Logan Evans (SEA) 4.5 +125 4.5 -160

Mitchell Parker has walked 16% of batters when going through the lineup the first time in a game this season — highest among qualified SPs in MLB; League Avg: 8% — first Percentile.

Mitchell Parker has struck out just 15% (24/164) of right-handed batters he faced this season — 4th lowest among qualified SPs in MLB; League Avg: 22% — fifth Percentile.

Mitchell Parker has a strikeout rate of just 31% (36 SO in 117 PAs) with two-strikes this season — 5th lowest among qualified SPs in MLB; League Avg: 42% — sixth Percentile.

Mitchell Parker has a strikeout rate of just 10% (6 SO in 61 PAs) in PAs ending on elevated fastballs this season — 2nd lowest among qualified SPs in MLB; League Avg: 24% — third Percentile.

Mariners Starting Pitcher Stats & Trends

Logan Evans has allowed a slugging percentage of .696 (16 Total Bases / 23 ABs) over the past seven days (1 game) — highest among AL Starters over the last week; League Avg: .351 — second Percentile.

29% of Logan Evans’ strikeouts are in the zone this season — 2nd lowest in MLB among starting pitchers with at least 20 total IP; League Avg: 50% — first Percentile.

Opponents have a line drive rate of 34% (30/87) against Logan Evans this season — highest in MLB among starting pitchers with at least 20 total IP; League Avg: 24% — 0 Percentile.

Logan Evans allowed a slugging percentage of .688 (11 Total Bases / 16 ABs) against right-handed batters in his last start — highest in MLB over the last week; League Avg: .343 — first Percentile.

Nationals Keys to the Game vs. the Mariners

The Nationals were just 20-43 (.317) vs top 10 scoring offenses in the 2024 season They play the Dodgers (second best runs scored) today.

The Nationals are just 66-98 (.400) after a win since the 2023 season — 4th lowest in MLB; League Avg: .506.

The Nationals were just 27-44 (.380) after a win in the 2024 season — 5th lowest in MLB; League Avg: .496.

The Nationals are just 93-102 (.474) when allowing 5 or more extra base hits since last season — 5th lowest in MLB; League Avg: .535.

Mariners Keys to the Game vs. the Nationals

The Mariners are 21-0 (1.000) when leading entering the 8th inning this season — tied for best in MLB; League Avg: .905.

The Mariners are 173-3 (.983) when leading entering the 9th inning since the 2023 season — tied for best in MLB; League Avg: .950.

The Mariners are 3-19 (.136) when trailing entering the 9th inning this season — best in MLB; League Avg: .041.

The Mariners were 58-5 (.921) when they scored 5 or more runs in the 2024 season — best in MLB; League Avg: .804.

Nationals hitters put 39% of their swings in play on pitches 95 mph or greater in 2023 — highest in MLB; League Avg: 34%.

Nationals hitters struck out just 340 times in 1,868 PA’s (18%) against LHP in 2023 — tied for best in MLB; League Avg: 23%.

Nationals hitters have an OPS of just .656 (2,341 PA’s) against LHP since last season — 3rd lowest in MLB; League Avg: .705.

Nationals hitters averaged just 3.76 pitches per plate appearance against RHP in 2023 — 2nd lowest in MLB; League Avg: 3.90.

The Mariners are batting just .208 when facing the starting pitcher for the 3rd time in a game since last season — lowest in MLB; League Avg: .261.

The Mariners batted just .207 when facing the starting pitcher for the 3rd time in a game in the 2024 season — lowest in MLB; League Avg: .263.

The Mariners are batting just .214 at home since last season — lowest in MLB; League Avg: .246.

The Mariners are batting just .225 when facing the starting pitcher for the 3rd time in a game since the 2023 season — lowest in MLB; League Avg: .264.

Nationals pitchers had a strikeout rate of just 38% with two-strikes in 2023 — tied for 2nd lowest in MLB; League Avg: 43%.

Nationals pitchers have a strikeout rate of just 39% with two-strikes since the 2023 season — 2nd lowest in MLB; League Avg: 42%.

Opponents had a miss rate of just 23% against Nationals pitchers in 2023 — 3rd lowest in MLB; League Avg: 26%.

Opponents have a miss rate of just 24% against Nationals pitchers since the 2023 season — 3rd lowest in MLB; League Avg: 25%.

Mariners pitchers allowed an OBP of just .251 (1,441 PA’s) when facing the leadoff batter in the inning in the 2024 season — best in MLB; League Avg: .305.

Mariners pitchers have allowed an OBP of just .264 (1,911 PA’s) when facing the leadoff batter in the inning since last season — best in MLB; League Avg: .308.

Mariners pitchers walked 76 of 1,441 batters (5%) when facing the leadoff batter in the inning in the 2024 season — best in MLB; League Avg: 7%.

The Mariners pitchers have allowed division opponents to score first in just 35% of their games since the 2023 season — lowest in MLB; League Avg: 50%.

More MLB Reading:


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Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.

Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.