Mariners vs Mets Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 17

Odds updated as of 2:14 a.m.

The MLB slate on Sunday includes the Seattle Mariners taking on the New York Mets.

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

Mariners vs Mets Game Info

• Seattle Mariners (68-56) vs. New York Mets (65-58)
• Date: Sunday, August 17, 2025
• Time: 7:10 p.m. ET
• Venue: Muncy Bank Ballpark at Historic Bowman Field -- Williamsport, Pennsylvania
• Coverage: ESPN

Mariners vs Mets Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-120) | NYM: (+102)
• Spread: SEA: -1.5 (+140) | NYM: +1.5 (-170)
• Total: 8.5 -- Over: (-104) | Under: (-118)

Mariners vs Mets Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 8-5, 3.71 ERA vs Clay Holmes (Mets) - 9-6, 3.71 ERA

The Mariners will give the nod to George Kirby (8-5, 3.71 ERA), who is eyeing win No. 9 on the season, and the Mets will counter with Clay Holmes (9-6, 3.71 ERA). Kirby's team is 6-8-0 against the spread in his starts this season. Kirby's team has won 66.7% of his starts when they are favored on the moneyline (8-4). The Mets have a 10-12-0 record against the spread in Holmes' starts. The Mets have been the underdog on the moneyline in five of Holmes' starts this season, and they went 2-3 in those matchups.

Mariners vs Mets Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mets win (51.3%)

Mariners vs Mets Moneyline

• The moneyline numbers for Mariners vs. Mets reveal Seattle as the favorite (-120) and New York as the underdog (+102) despite being the home team.

Mariners vs Mets Spread

• The Mariners are 1.5-run road favorites on the runline against the Mets. The Mariners are +140 to cover, and the Mets are -170.

Mariners vs Mets Over/Under

• An over/under of 8.5 has been set for Mariners-Mets on Aug. 17, with the over being -104 and the under -118.

Bet on Seattle Mariners vs. New York Mets on FanDuel today!

Mariners vs Mets Betting Trends

• The Mariners have been favorites in 83 games this season and have come away with the win 47 times (56.6%) in those contests.
• These are the best odds of a victory sportsbooks have given Seattle this season, with a -120 moneyline set for this game.
• The Mariners and their opponents have hit the over in 62 of their 120 games with a total set by oddsmakers this season.
• The Mariners have posted a record of 52-68-0 against the spread this season.
• The Mets are 13-21 in games they were listed as the moneyline underdog (winning 38.2% of those games).
• New York has yet to play a game with moneyline odds of +102 or longer.
• In the 117 games bookmakers have set an over/under for the Mets, they have combined with opponents to go over the total 52 times (52-61-4).
• The Mets have gone 55-62-0 ATS this season.

Mariners Player Leaders

• Cal Raleigh leads Seattle with 113 hits and an OBP of .358 this season. He has a .250 batting average and a slugging percentage of .595.
• Among qualifying hitters, he ranks 100th in batting average, his on-base percentage ranks 28th, and he is third in slugging.
• Raleigh has recorded at least one hit in two games in a row. During his last five outings he is hitting .333 with two doubles, a home run, four walks and two RBIs.
• Josh Naylor is hitting .289 with 22 doubles, a triple, 15 home runs and 42 walks. He's slugging .455 with an on-base percentage of .355.
• He is 19th in batting average, 35th in on-base percentage and 56th in slugging among qualifying hitters.
• Julio Rodriguez has an OPS of .769, fueled by an OBP of .313 and a team-best slugging percentage of .456 this season.
• Eugenio Suarez is batting .235 with a .305 OBP and 94 RBI for Seattle this season.
• Suarez brings a four-game hitting streak into this game. In his last five games he is hitting .222 with a double, a home run, a walk and two RBIs.

Mets Player Leaders

• Juan Soto has accumulated a team-high .383 on-base percentage. He's batting .252 and slugging .498.
• He is 96th in batting average, eighth in on-base percentage and 22nd in slugging percentage among all qualifying hitters in the big leagues.
• Soto takes a nine-game hitting streak into this game. During his last 10 games he is batting .278 with five home runs, eight walks and eight RBIs.
• Pete Alonso paces his team with 124 hits. He has a batting average of .268 while slugging .522 with an on-base percentage of .352.
• He is 51st in batting average, 42nd in on-base percentage and 13th in slugging percentage in the big leagues.
• Francisco Lindor has a team-best .451 slugging percentage.
• Brandon Nimmo is batting .253 with 23 doubles, 20 home runs and 42 walks.

Mariners vs Mets Head to Head

• 8/16/2025: 3-1 NYM (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 8/15/2025: 11-9 SEA (Favorite: Mets, Spread: -1.5, Total: 8.5, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 8/11/2024: 12-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 8/10/2024: 4-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 8/9/2024: 6-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -134, Underdog Moneyline: +116)
• 9/3/2023: 6-3 NYM (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -158, Underdog Moneyline: +134)
• 9/2/2023: 8-7 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 9/1/2023: 2-1 NYM (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 5/15/2022: 8-7 SEA (Favorite: Mets, Spread: -1.5, Total: 7.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 5/13/2022: 2-1 SEA (Favorite: Mets, Spread: -1.5, Total: 7, Favorite Moneyline: -245, Underdog Moneyline: +205)

Sign up for FanDuel Sportsbook and FanDuel Daily Fantasy today!