Mariners vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for May 29

Odds updated as of 9:11 p.m.

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

All the info you need to make smart bets on this game at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

Mariners vs Nationals Game Info

• Seattle Mariners (30-24) vs. Washington Nationals (25-30)
• Date: Thursday, May 29, 2025
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Fox Sports 1, ROOT Sports NW, and MASN

Mariners vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-116) | WSH: (-102)
• Spread: SEA: +1.5 (-200) | WSH: -1.5 (+164)
• Total: 7.5 -- Over: (-115) | Under: (-105)

Mariners vs Nationals Probable Starting Pitchers

Probable Pitchers: Emerson Hancock (Mariners) - 2-2, 5.95 ERA vs MacKenzie Gore (Nationals) - 2-5, 3.47 ERA

The probable pitchers are Emerson Hancock (2-2) for the Mariners and MacKenzie Gore (2-5) for the Nationals. Hancock and his team have a record of 6-2-0 against the spread when he starts. Hancock's team is 1-1 this season when he starts and they're favored on the moneyline. When Gore starts, the Nationals have gone 4-7-0 against the spread. The Nationals have a 2-2 record in Gore's four starts this season when they were the moneyline underdog.

Mariners vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (52.2%)

Mariners vs Nationals Moneyline

• The moneyline numbers for Mariners vs. Nationals reveal Seattle as the favorite (-116) and Washington as the underdog (-102) on the road.

Mariners vs Nationals Spread

• The Nationals are 1.5-run favorites against the spread for this matchup with the Mariners. The Nationals are +164 to cover, while the Mariners are -200 to cover as a 1.5-run underdog on the runline.

Mariners vs Nationals Over/Under

• An over/under of 7.5 has been set for Mariners-Nationals on May 29, with the over being -115 and the under -105.

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Mariners vs Nationals Betting Trends

• The Mariners have been victorious in 18, or 54.5%, of the 33 contests they have been chosen as favorites in this season.
• Seattle has a record of 17-13 in contests when oddsmakers favor them by -116 or more on the moneyline.
• The Mariners and their opponents have hit the over in 29 of their 53 games with a total set by oddsmakers this season.
• In 53 games with a line this season, the Mariners have a mark of 26-27-0 against the spread.
• The Nationals have won 22 of the 42 games they were the moneyline underdog this season (52.4%).
• When it has played as a moneyline underdog with odds of -102 or longer, Washington has a record of 21-18 (53.8%).
• The Nationals have combined with opponents to hit the over on the total 26 times this season for a 26-26-1 record against the over/under.
• The Nationals have a 29-24-0 record ATS this season (covering 54.7% of the time).

Mariners Player Leaders

• Cal Raleigh has 51 hits, which leads Seattle hitters this season, while batting .258 with 29 extra-base hits. He has an on-base percentage of .370 and a slugging percentage of .596.
• Among qualified hitters in MLB, he is 73rd in batting average, 29th in on-base percentage, and fourth in slugging.
• Raleigh hopes to build on a three-game hitting streak in this matchup. During his last five outings he is hitting .300 with three home runs, two walks and four RBIs.
• Julio Rodriguez has hit 10 homers this season while driving in 32 runs. He's batting .240 this season and slugging .424 with an on-base percentage of .313.
• His batting average ranks 112th among qualified players, his on-base percentage 108th, and his slugging percentage 80th.
• Jorge Polanco has 37 hits this season and has a slash line of .274/.327/.541.
• J.P. Crawford leads Seattle with an OBP of .377 this season while batting .256 with 34 walks and 25 runs scored.

Nationals Player Leaders

• James Wood has put up a team-high OBP (.380) and slugging percentage (.569), and leads the Nationals in hits (60, while batting .287).
• He ranks 30th in batting average, 23rd in on-base percentage and sixth in slugging percentage among all qualifying batters in MLB.
• Wood hopes to build on a four-game hitting streak in this matchup. During his last five outings he is hitting .250 with two doubles, three home runs, a walk and seven RBIs.
• C.J. Abrams has 10 doubles, two triples, eight home runs and 11 walks while hitting .280. He's slugging .506 with an on-base percentage of .341.
• Including all qualified players, he ranks 35th in batting average, 59th in on-base percentage and 25th in slugging percentage.
• Luis Garcia is hitting .234 with 10 doubles, five home runs and 12 walks.
• Nathaniel Lowe is hitting .220 with nine doubles, eight home runs and 20 walks.

Mariners vs Nationals Head to Head

• 5/28/2025: 9-0 WSH (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -215, Underdog Moneyline: +180)
• 5/27/2025: 9-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -164, Underdog Moneyline: +138)
• 5/26/2024: 9-5 SEA (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -174, Underdog Moneyline: +146)
• 5/25/2024: 3-1 WSH (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -164, Underdog Moneyline: +138)
• 5/24/2024: 6-1 WSH (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -132, Underdog Moneyline: +112)
• 6/28/2023: 4-1 WSH (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -290, Underdog Moneyline: +235)
• 6/27/2023: 7-4 WSH (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -240, Underdog Moneyline: +198)
• 6/26/2023: 8-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -260, Underdog Moneyline: +215)
• 8/24/2022: 3-1 WSH (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -335, Underdog Moneyline: +270)
• 8/23/2022: 4-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -290, Underdog Moneyline: +235)

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