Padres vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for May 18

Odds updated as of 2:11 a.m.

The San Diego Padres are among the MLB squads in action on Sunday, up against the Seattle Mariners.

We've got you covered, in terms of the most important info about this matchup before you take a look at the MLB odds and spreads on FanDuel Sportsbook.

Padres vs Mariners Game Info

• San Diego Padres (27-17) vs. Seattle Mariners (25-19)
• Date: Sunday, May 18, 2025
• Time: 4:10 p.m. ET
• Venue: PETCO Park -- San Diego, California
• Coverage: SDPA and ROOT Sports NW

Padres vs Mariners Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SD: (-190) | SEA: (+160)
• Spread: SD: -1.5 (+106) | SEA: +1.5 (-128)
• Total: 8 -- Over: (-120) | Under: (-102)

Padres vs Mariners Probable Starting Pitchers

Probable Pitchers: Michael King (Padres) - 4-1, 2.32 ERA vs Bryan Woo (Mariners) - 4-1, 2.84 ERA

The probable starters are Michael King (4-1) for the Padres and Bryan Woo (4-1) for the Mariners. King's team is 4-5-0 against the spread this season in his starts. King's team has been victorious in 57.1% of the games he's started as the moneyline favorite with a record of 4-3. The Mariners have gone 4-4-0 against the spread when Woo starts. The Mariners are 2-2 in Woo's four starts this season that they were the underdog on the moneyline.

Padres vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Padres win (56.7%)

Padres vs Mariners Moneyline

• Looking at the moneyline for Mariners-Padres, Seattle is the underdog at +160, and San Diego is -190 playing at home.

Padres vs Mariners Spread

• The Padres are favored by 1.5 runs at home versus the Mariners. The Padres are +106 to cover the spread, while the Mariners are -128.

Padres vs Mariners Over/Under

• The Padres-Mariners contest on May 18 has been given an over/under of 8 runs. The over is set at -120 and the under at -102.

Bet on San Diego Padres vs. Seattle Mariners on FanDuel today!

Padres vs Mariners Betting Trends

• The Padres have been chosen as favorites in 24 games this year and have walked away with the win 16 times (66.7%) in those games.
• San Diego has a record of 5-3 when favored by -190 or more this year.
• The Padres and their opponents have gone over the total this season in 19 of their 43 opportunities.
• In 43 games with a line this season, the Padres have a mark of 25-18-0 against the spread.
• The Mariners have won 55.6% of the games this season they were the underdog on the moneyline (10-8).
• Seattle has not yet played a game with moneyline odds of +160 or longer.
• In the 44 games bookmakers have set an over/under for the Mariners, they have combined with opponents to go over the total 25 times (25-17-2).
• The Mariners have covered 50% of their games this season, going 22-22-0 against the spread.

Padres Player Leaders

• Fernando Tatis Jr. leads San Diego in total hits (51) this season while batting .305 with 18 extra-base hits. He has an on-base percentage of .378 and a slugging percentage of .551.
• Among all qualified hitters in baseball, he is 14th in batting average, 25th in on-base percentage, and 11th in slugging.
• Tatis has recorded at least one hit in two straight games. During his last five outings he is batting .200 with a double, two home runs, three walks and three RBIs.
• Manny Machado is slashing .323/.392/.466 this season and leads the Padres with an OPS of .858.
• Among qualified batters, his batting average ranks him sixth, his on-base percentage 11th, and his slugging percentage 46th.
• Luis Arraez is batting .299 with a .416 slugging percentage and 15 RBI this year.
• Arraez brings a five-game hitting streak into this matchup. During his last five outings he is batting .368 with a double and a walk.
• Xander Bogaerts is batting .252 with a .339 OBP and 20 RBI for San Diego this season.

Mariners Player Leaders

• Cal Raleigh paces the Mariners with 40 hits. He's batting .253 and slugging .589 with an on-base percentage of .379.
• He is 86th in batting average, 22nd in on-base percentage and fifth in slugging percentage among all qualified hitters in the majors.
• Raleigh enters this game on a five-game hitting streak. In his last five games he is hitting .353 with a double, three home runs, three walks and six RBIs.
• Jorge Polanco has six doubles, 10 home runs and eight walks while batting .313. He's slugging .626 with an on-base percentage of .360.
• Julio Rodriguez has a .404 slugging percentage, which paces the Mariners.
• Randy Arozarena has a .385 on-base percentage to lead his team.

Padres vs Mariners Head to Head

• 5/17/2025: 4-1 SEA (Favorite: Padres, Spread: -1.5, Total: 8, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 5/16/2025: 5-1 SEA (Favorite: Padres, Spread: -1.5, Total: 8.5, Favorite Moneyline: -166, Underdog Moneyline: +140)
• 9/11/2024: 5-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 6.5, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 9/10/2024: 7-3 SD (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 7/10/2024: 2-0 SEA (Favorite: Padres, Spread: -1.5, Total: 7.5, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 7/9/2024: 8-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 8/9/2023: 6-1 SEA (Favorite: Padres, Spread: -1.5, Total: 8.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 8/8/2023: 2-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 6/7/2023: 10-3 SD (Favorite: Padres, Spread: -1.5, Total: 7.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 6/6/2023: 4-1 SEA (Favorite: Padres, Spread: -1.5, Total: 7.5, Favorite Moneyline: -130, Underdog Moneyline: +110)

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