Mets vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 15

Odds updated as of 6:15 p.m.

On Friday in MLB, the New York Mets are playing the Seattle Mariners.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the vital information about this game.

Mets vs Mariners Game Info

• New York Mets (64-57) vs. Seattle Mariners (67-55)
• Date: Friday, August 15, 2025
• Time: 7:10 p.m. ET
• Venue: Citi Field -- Queens, New York
• Coverage: MLB Network, SNY, and ROOT Sports NW

Mets vs Mariners Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: NYM: (-126) | SEA: (+108)
• Spread: NYM: -1.5 (+150) | SEA: +1.5 (-182)
• Total: 8.5 -- Over: (-120) | Under: (-102)

Mets vs Mariners Probable Starting Pitchers

Probable Pitchers: Sean Manaea (Mets) - 1-1, 4.33 ERA vs Luis Castillo (Mariners) - 8-6, 3.19 ERA

The Mets will give the nod to Sean Manaea (1-1, 4.33 ERA), who is eyeing win No. 2 on the season, and the Mariners will turn to Luis Castillo (8-6, 3.19 ERA). Manaea and his team are 1-4-0 ATS this season when he starts. Manaea's team has a record of 1-3 this season when he starts and they are the favorite on the moneyline. The Mariners are 10-14-0 against the spread when Castillo starts. The Mariners are 2-2 in Castillo's four starts this season that they were the underdog on the moneyline.

Mets vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (50.6%)

Mets vs Mariners Moneyline

• Seattle is the underdog, +108 on the moneyline, while New York is a -126 favorite at home.

Mets vs Mariners Spread

• The Mariners are at +1.5 on the runline against the Mets. The Mariners are -182 to cover the spread, and the Mets are +150.

Mets vs Mariners Over/Under

• Mets versus Mariners on Aug. 15 has an over/under of 8.5 runs, with the odds on the over -120 and the under set at -102.

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Mets vs Mariners Betting Trends

• The Mets have won in 50, or 61.7%, of the 81 contests they have been named as odds-on favorites in this year.
• This season New York has been victorious 40 times in 68 chances when named as a favorite of at least -126 on the moneyline.
• The Mets and their opponents have gone over the total this season in 51 of their 115 opportunities.
• The Mets are 54-61-0 against the spread in their 115 games with a line set by sportsbooks this season.
• The Mariners are 16-16 in games they were listed as the moneyline underdog (winning 50% of those games).
• Seattle has a 12-8 record (winning 60% of its games) when it has played as a moneyline underdog of +108 or longer.
• The Mariners have played in 118 games with a set over/under, and have combined with their opponents to go over the total 61 times (61-52-5).
• The Mariners have gone 51-67-0 ATS this season.

Mets Player Leaders

• Juan Soto leads New York with an OBP of .384 this season while batting .252 with 92 walks and 86 runs scored. He has a slugging percentage of .494.
• Among all qualifying hitters in the majors, he ranks 95th in batting average, eighth in on-base percentage, and 23rd in slugging.
• Soto will look for his eighth straight game with a hit in this contest. During his last 10 outings he is hitting .297 with four home runs, eight walks and six RBIs.
• Pete Alonso has 123 hits to go with a slugging percentage of .528, both of which rank first among New York hitters this season. He's batting .272 with an on-base percentage of .356.
• Among qualifiers, he ranks 47th in batting average, 36th in on-base percentage and 11th in slugging percentage.
• Alonso brings a five-game streak with at least one hit into this contest. During his last five outings he is hitting .476 with three doubles, three home runs and eight RBIs.
• Francisco Lindor has collected 120 base hits, an OBP of .320 and a slugging percentage of .435 this season.
• Lindor brings a three-game hitting streak into this game. In his last five games he is hitting .300 with a double, a home run, three walks and an RBI.
• Brandon Nimmo has 20 home runs, 67 RBI and a batting average of .251 this season.
• Nimmo has hit safely in three straight games. During his last five outings he is hitting .222 with a double, a home run, three walks and four RBIs.

Mariners Player Leaders

• Cal Raleigh has 108 hits, a team-high for the Mariners. He's batting .243 and slugging .582 with an on-base percentage of .350.
• Including all the qualifying hitters in the big leagues, his batting average ranks 117th, his on-base percentage is 43rd, and he is third in slugging.
• Josh Naylor's .359 on-base percentage paces his team. He has a batting average of .292 while slugging .459.
• He is 16th in batting average, 28th in on-base percentage and 50th in slugging percentage in MLB.
• Julio Rodriguez has a slugging percentage of .457, a team-best for the Mariners.
• Eugenio Suarez has 20 doubles, 37 home runs and 32 walks while hitting .234.

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