Seattle Mariners vs Philadelphia Phillies Prediction 8/18/2025 Today’s MLB Picks

The Seattle Mariners and the Philadelphia Phillies meet Monday in MLB action from Citizens Bank Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s a Seattle Mariners vs. Philadelphia Phillies prediction.

Starting Pitching Matchup

The Seattle Mariners will start Logan Gilbert here and Gilbert is 3-4 with a 3.31 ERA and 124 strikeouts this season. In his career, Gilbert is 0-2 with a 5.06 ERA and 22 strikeouts against Philadelphia. Ranger Suarez will get the nod for the Phillies here and is 8-6 with a 3.28 ERA and 101 strikeouts this season. This will be Suarez’s second career start against the Mariners.

Seattle Mariners Recap

The Seattle Mariners come into this game looking to bounce back from a 7-3 loss at the hands of the New York Mets last time out to sit at 68-57 this season. After this series, the Mariners will head home for a series against the Athletics.

Mariners Drop 4 Of Their Last 5 Games

Jorge Polanco has 87 hits including 18 home runs and 54 RBIs while Cal Raleigh has 115 hits with 18 doubles, a team-high 47 home runs and 102 RBIs. Randy Arozarena has 113 hits with 24 doubles, 23 home runs, 58 RBIs and 24 stolen bases. Julio Rodriguez also has 133 hits with 22 doubles, 4 triples, 24 home runs, 69 RBIs and 23 stolen bases. Dylan Moore has 9 homers and 12 stolen bases as well this season. J.P Crawford has 118 hits with 17 doubles, 9 home runs and 44 RBIs.

Why the Seattle Mariners will win

• The Mariners have won seven of their last eight night games against NL East opponents that held a winning record.
• The Phillies have lost each of their last three home games against AL West opponents following a win.
• The Phillies have failed to cover the run line in each of their last four home games against American League opponents following a road win.
• The Mariners have covered the run line in each of their last three night games against the Phillies following a loss.

Seattle Mariners Player Prop Facts

• Cal Raleigh has hit at least one home run in six of the Mariners’ last seven night games against NL opponents that held a winning record.
• Logan Gilbert has recorded seven or more strikeouts in five of his last six road appearances against NL opponents that held a winning record.
• Cal Raleigh has recorded at least one hit in each of the Mariners’ last 12 night games against NL opponents that held a winning record.
• Logan Gilbert has recorded a win in nine of his 12 previous road appearances against NL opponents that held a winning record.
• Cal Raleigh ranks 1st in the league in Home Runs (47) this season.

Philadelphia Phillies Recap

The Philadelphia Phillies come into this game looking to build on their 11-9 win over the Washington Nationals to sit at 71-53 this season. After this series with Seattle, the Phillies will have a rematch set with the Nationals this weekend.

Phillies Alternate Wins & Losses In 4 Straight

Nick Castellanos has 117 hits with 24 doubles including 16 home runs and 61 RBIs while Kyle Schwarber has 114 hits with a team-high 43 home runs and 102 RBIs but also has a team-high 150 strikeouts as well on the year. Bryce Harper has 10 stolen bases, 28 doubles, 19 home runs and 55 RBIs. Trea Turner also has 147 hits with 4 triples, 12 home runs, 52 RBIs and a team-high 28 stolen bases. Max Kepler has 16 doubles and Bryson Stott has 15 doubles, 3 triples, 7 homers and 47 RBIs while Stott also has 19 stolen bases as well this season.

Why the Philadelphia Phillies will win

• The underdogs have won each of the Mariners’ last five games.
• The Mariners have lost each of their last four games as favorites.
• The Mariners have failed to cover the run line in each of their last seven games as favorites against National League opponents.
• The Phillies have covered the run line in each of their last seven games as underdogs against American League opponents.

Philadelphia Phillies Player Prop Facts

• Kyle Schwarber has hit at least one home run in four of the Phillies’ last five games as underdogs.
• Ranger Suarez has recorded six or more strikeouts in nine of his last 10 appearances with the Phillies as underdogs.
• Trea Turner has recorded at least one hit in each of the Phillies’ last eight home games against AL West opponents.
• J.T. Realmuto has recorded a Double in three of his last four home appearances against AL West opponents.
• Ranger Suarez has recorded a win in three of his last four appearances with the Phillies as underdogs.
• Trea Turner ranks 2nd in the league in Hits (147) this season.

Total Runs Facts

• Each of the Mariners’ last seven night games against NL East opponents have gone OVER the total runs line.
• Each of the Phillies’ last five games as home underdogs have gone OVER the total runs line.

Seattle Mariners vs. Philadelphia Phillies Prediction

I’m on the Mariners here. I know it’ll be interesting to see how the Mariners bounce back off of the loss in Williamsport, but it’s not like it’s a massive travel spot for Seattle here to go to Philadelphia. Ranger Suarez hasn’t looked right in some of his recent outings and the Mariners have been turning up the heat at the plate as of late despite some recent hiccups. I think Seattle draws first blood in this series, so give me the Mariners in this one.