Mariners vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for May 27

Odds updated as of 2:13 p.m.

The Seattle Mariners versus the Washington Nationals is on the MLB schedule for Tuesday.

Here's what you need to know before checking out today's MLB odds and spreads on FanDuel Sportsbook.

Mariners vs Nationals Game Info

• Seattle Mariners (29-23) vs. Washington Nationals (24-29)
• Date: Tuesday, May 27, 2025
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: ROOT Sports NW and MASN2

Mariners vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-156) | WSH: (+132)
• Spread: SEA: -1.5 (+134) | WSH: +1.5 (-162)
• Total: 8.5 -- Over: (-104) | Under: (-118)

Mariners vs Nationals Probable Starting Pitchers

Probable Pitchers: Logan Evans (Mariners) - 2-1, 5.00 ERA vs Mitchell Parker (Nationals) - 4-3, 4.39 ERA

This contest's pitching matchup is set, as the Mariners will send Logan Evans (2-1) to the mound, while Mitchell Parker (4-3) will take the ball for the Nationals. Evans' team is 1-4-0 against the spread in his starts this season. Evans' team has won 66.7% of his starts when they are favored on the moneyline (2-1). The Nationals have a 7-2-0 record against the spread in Parker's starts. The Nationals have been the moneyline underdog in seven of Parker's starts this season, and they went 6-1 in those games.

Mariners vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (58.1%)

Mariners vs Nationals Moneyline

• Washington is the underdog, +132 on the moneyline, while Seattle is a -156 favorite at home.

Mariners vs Nationals Spread

• The Nationals are at +1.5 on the runline against the Mariners. The Nationals are -162 to cover the spread, and the Mariners are +134.

Mariners vs Nationals Over/Under

• Mariners versus Nationals on May 27 has an over/under of 8.5 runs, with the odds on the over -104 and the under set at -118.

Bet on Seattle Mariners vs. Washington Nationals on FanDuel today!

Mariners vs Nationals Betting Trends

• The Mariners have been favorites in 31 games this season and have come away with the win 17 times (54.8%) in those contests.
• This season Seattle has come away with a win six times in 10 chances when named as a favorite of at least -156 on the moneyline.
• The Mariners and their opponents have gone over in 27 of their 51 games with a total set by sportsbooks this season.
• The Mariners have an against the spread record of 25-26-0 in 51 games with a line this season.
• The Nationals are 21-19 in games they were listed as the moneyline underdog (winning 52.5% of those games).
• Washington has a 10-11 record (winning 47.6% of its games) when it has played as a moneyline underdog of +132 or longer.
• The Nationals have played in 51 games with a set over/under, and have combined with their opponents to go over the total 24 times (24-26-1).
• The Nationals have a 28-23-0 record ATS this season (covering 54.9% of the time).

Mariners Player Leaders

• Cal Raleigh leads Seattle in total hits (48) this season while batting .254 with 27 extra-base hits. He has an on-base percentage of .372 and a slugging percentage of .577.
• Among qualifying batters, he ranks 86th in batting average, his on-base percentage ranks 27th, and he is fourth in slugging.
• Julio Rodriguez leads Seattle in slugging percentage (.413) thanks to 17 extra-base hits. He's batting .236 with an on-base percentage of .312.
• He ranks 116th in batting average, 109th in on-base percentage and 85th in slugging in the major leagues.
• Jorge Polanco has 37 hits this season and has a slash line of .282/.336/.557.
• J.P. Crawford leads Seattle with an OBP of .379 this season while batting .260 with 32 walks and 23 runs scored.

Nationals Player Leaders

• James Wood has totaled 57 hits with a .378 on-base percentage and a .542 slugging percentage, all club-highs for the Nationals. He's batting .284.
• Including all qualified players in MLB, he is 30th in batting average, 22nd in on-base percentage and 10th in slugging percentage.
• C.J. Abrams is batting .294 with 10 doubles, two triples, eight home runs and 11 walks. He's slugging .531 with an on-base percentage of .352.
• His batting average ranks 20th among all qualified players, his on-base percentage ranks 49th, and he is 16th in slugging.
• Luis Garcia is hitting .231 with nine doubles, four home runs and 11 walks.
• Nathaniel Lowe is batting .224 with nine doubles, eight home runs and 19 walks.

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