Mariners vs. Phillies Betting Lines, Odds, & Player Matchups August 18, 2025

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Data Skrive

The Seattle Mariners (68-57) visit the Philadelphia Phillies (71-53) at 6:45 p.m. ET on Monday, providing a showdown of top-five sluggers. Cal Raleigh has 47 homers (first in the league) for the favored Mariners (-112), and Kyle Schwarber ranks second in MLB play with 43 dingers this season for the underdog Phillies (-107). Seattle has Logan Gilbert starting, and Philadelphia counters with Ranger Suarez.

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Odds to Win

Mariners to win vs Phillies -112

Bet $20, Payout $37.86

Mariners vs. Phillies betting lines

  • Favorite: Mariners (-112)
  • Underdog: Phillies (-107)
  • Over/under: 8

Mariners betting info, hitting leaders, & pitching

Mariners betting info

  • The Mariners have been favored on the moneyline 86 total times this season. They’ve finished 47-39 in those games.
  • Seattle has a record of 45-37 when playing as moneyline favorites with odds of -112 or shorter (54.9% winning percentage).
  • The Mariners have a 52.8% chance to win this game based on the moneyline’s implied probability.
  • Seattle has played in 125 games with a set over/under, and have combined with its opponents to go over the total 65 times (65-55-5).
  • The Mariners have gone 52-73-0 ATS this season.

Mariners hitting info

  • Raleigh paces the Mariners in home runs (47) and runs batted in (102).
  • Among all batters in MLB, Raleigh’s home run total ranks first and his RBI tally ranks first.
  • Raleigh heads into this game on a three-game hitting streak. In his last five games he is batting .438 with two doubles, two home runs, four walks and four RBIs.
  • Josh Naylor is batting .286 to lead his team.
  • Naylor ranks 95th in home runs and 33rd in RBI among MLB batters this season.
  • Julio Rodriguez has 22 doubles, four triples, 24 home runs and 32 walks while batting .259.
  • Eugenio Suarez is batting .235 with 21 doubles, 38 home runs and 32 walks.
  • Eugenio Suarez has hit safely in five straight games. During his last five outings he is batting .263 with a double, a home run, a walk and two RBIs.

Mariners pitching rankings

  • The Mariners pitching staff ranks 14th in the majors with a collective 8.5 strikeouts per nine innings.
  • Seattle has a 3.88 team ERA that ranks 13th across all MLB pitching staffs.
  • Pitchers for the Mariners combine for the No. 10-ranked WHIP in the majors (1.241).
  • Mariners pitchers combine to give up 146 total home runs at a rate of 1.2 per game (19th-fewest in baseball).
  • Seattle lost to the Mets 7-3 in its last game with nine strikeouts while allowing 14 hits.

Phillies betting info, hitting leaders, & pitching

Phillies betting info

  • The Phillies have been underdogs in 24 games this season and won 10 (41.7%) of those contests.
  • Philadelphia has a record of 9-12 in games where bookmakers have it as underdogs of at least -107 on the moneyline.
  • The moneyline for this contest implies a 51.7% chance of a victory for the Phillies.
  • Philadelphia’s games have gone over the total in 51 of its 124 chances.
  • In 124 games with a spread this season, the Phillies are 62-62-0 ATS.

Phillies hitting info

  • Schwarber leads Philadelphia in home runs with 43 and runs batted in with 102.
  • Schwarber’s home run total ranks second in the majors, and he is first in RBI.
  • Trea Turner is batting .291 to lead Philadelphia, while adding 12 homers and 52 runs batted in this season.
  • Turner is 130th in homers and 99th in RBI among all major league hitters this season.
  • Turner heads into this game on a seven-game hitting streak. In his last 10 games he is hitting .366 with three doubles, a home run, five walks and six RBIs.
  • Bryce Harper has collected 94 base hits, an OBP of .355 and a slugging percentage of .492 this season.
  • Nick Castellanos is batting .253 with an OBP of .291 and a slugging percentage of .413 this season.

Phillies pitching rankings

  • The Phillies have a 9.2 K/9 this season as a pitching staff, second-best in baseball.
  • Philadelphia pitchers have a combined ERA of 3.75 ERA this year, sixth-best in baseball.
  • The Phillies have a combined 1.234 WHIP as a pitching staff, eighth-lowest in MLB.
  • The Phillies have allowed the 10th-fewest home runs this season at just 134, or 1.1 per game.
  • Last time out, Philadelphia defeated the Nationals, 11-9, with nine strikeouts and 13 hits allowed.
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