Seattle Mariners vs Philadelphia Phillies Prediction – 8/18/2025
The Seattle Mariners will go to Citizens Bank Park to begin a three-game series against the Philadelphia Phillies on Monday. Both teams are in playoff positions heading into this series opener and both teams will look for a win behind strong starting pitching here. Before this interleague series gets underway, continue reading to get my Mariners vs Phillies prediction for tonight.
Our Mariners vs Phillies Pick
- Pick: Philadelphia Phillies Moneyline
- Confidence: ★★★★☆
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Game Snapshot
- Matchup: Seattle Mariners vs Philadelphia Phillies
- Date & Time: Monday, August 18, 2025, 6:45 p.m. ET
- Starting Pitchers: Logan Gilbert (SEA), Ranger Suárez (PHI)
- Stadium: Citizens Bank Park, Philadelphia, PA
- Broadcast: MLB Network
Key Storylines
Pitching matchup
Logan Gilbert has been solid in 17 starts for the Mariners. He has a 3.31 ERA, 0.98 WHIP, and 124 strikeouts across 89.2 innings. Ranger Suárez has a 3.28 ERA across 112 innings with 101 strikeouts for the Phillies. But his last three outings have been rough. He is a combined 0-2 with a 6.75 ERA over his last 18.2 innings. Suarez will aim to turn things around against the Mariners here.
Key Players
- Cal Raleigh leads Seattle with 47 home runs and 102 RBI. He is a major offensive threat for the Mariners.
- Kyle Schwarber packs plenty of power for Philly with 43 homers and 102 RBI.
Recent team streaks
- The Mariners have lost two games in a row and four of their last five.
- Seattle most recently dropped two out of three games to the New York Mets.
- The Phillies are 2-3 in their last five games.
- Philadelphia won two out of three games against the Nationals in their last series.
Key Stat Leaders
| Category | Seattle | Philadelphia |
|---|---|---|
| Home Runs | Cal Raleigh – 47 | Kyle Schwarber – 43 |
| Starting Pitcher Strikeouts | Logan Gilbert – 124 | Ranger Suárez – 101 |
| Batting Average | JP Crawford – .262 | Trea Turner – .291 |
Betting Trends & H2H
- This is the first meeting of the season between the Mariners and Phillies.
- The Mariners are 52-72 on the runline this year. That is the second-worst record in MLB.
- Philadelphia is 64-60 on the runline for the season.
Mariners vs Phillies Model Projection
Score Projection: Philadelphia 5 – Seattle 3
Win Probability: Philadelphia 54%, Seattle 46%
Final Thoughts
Both starting pitchers should give their teams a chance to win this game. This contest will come down to which side can find some timely hits against the opposing bullpen. I will back the Philadelphia Phillies to be that team. The Phillies are 37-21 at home on the year and they are one of the few teams with the power bats to keep up with those on the Seattle side. I expect Philly to win while I’m hoping for some fireworks from both Cal Raleigh and Kyle Schwarber.
