Philadelphia Phillies vs Seattle Mariners Picks and Predictions August 20th 2025

Philadelphia Phillies vs Seattle Mariners August 20th 2025

The Seattle Mariners will visit the Philadelphia Phillies at Citizens Bank Park on Wednesday, August 20, 2025. The Mariners have a record of 68-59 and are ranked second in the AL West. They are on a four-game losing streak and have gone 4-6 in their last 10 games.

The Phillies hold a 73-53 record and are at the top of the NL East. They are on a three-game winning streak with a 6-4 record in their last 10 games. The game will be played outdoors, and the weather forecast predicts light rain with a mild breeze. Luis Castillo will start for the Mariners, while Jesús Luzardo will take the mound for the Phillies.

Mariners vs Phillies Key Information

• Sport: Baseball
• Teams: Seattle Mariners vs. Philadelphia Phillies
• Venue: Citizens Bank Park in Philadelphia, PA
• Date: Wednesday, August 20, 2025
• Betting Odds: Mariners Moneyline +119, Phillies Moneyline -141

The Mariners Can Win If…

The Seattle Mariners are coming off a close 6-4 loss to the Philadelphia Phillies. Despite the loss, Eugenio Suárez had a strong performance with three hits and two RBIs. The Mariners’ lineup showed they can produce extra-base hits, recording five in the game.

The Mariners have a powerful lineup, ranking third in the league with 178 home runs this season. Cal Raleigh leads the team with 47 home runs, which is the highest in the league. Their ability to hit home runs can change the game quickly in their favor.

Seattle’s starting pitcher, Luis Castillo, has a solid ERA of 3.48 and a WHIP of 1.22. His consistency on the mound gives the Mariners a reliable chance to keep the game close. With Castillo starting, the Mariners have a strong opportunity to secure a win against the Phillies.

The Phillies Can Win If…

The Philadelphia Phillies are coming off a 6-4 win against the Seattle Mariners. Cristopher Sánchez led the charge on the mound with 12 strikeouts over 6 1/3 innings. J.T. Realmuto, Bryson Stott, and Kyle Schwarber each hit home runs, driving in key runs for the team.

Key stats for the Phillies show they are strong contenders. They rank 3rd in batting average at .255 and 4th in on-base percentage at .324. Their pitching staff has a solid ERA of 3.78, ranking 8th in the league, and they lead in quality starts with 69.

The Phillies have several players who can make a difference. Kyle Schwarber, with 44 home runs, is a top power hitter. Trea Turner and Bryce Harper also provide consistent performances, both with batting averages above .260. With Jesús Luzardo starting, the Phillies have a chance to continue their winning streak.

The Lean

The Phillies are favored to win with a moneyline of -141. They have a strong batting average and rank well in on-base percentage. My model projects the Phillies to win 5-4. Given these factors, the Phillies are the recommended pick for the moneyline.

The total for the game is set at 8.5 runs. The Phillies’ pitching has a solid earned run average, and the Mariners have a decent batting average. My model projects a total score of 9 runs. Therefore, the recommendation is to take the over at 8.5 runs.

Real-Time MLB Scores

Don’t Miss the Action

Get Free Trial

Mariners Hope to Snap Skid, Salvage Series vs Phillies

It’s been a grind on the East Coast for the Seattle Mariners, and they’re looking to get something out of it. After a four-game losing streak and a pair of tough losses in Philly, the Mariners are hoping to end their nine-game road trip on a high note when they face the Philadelphia Phillies Wednesday afternoon.

Before placing your wagers or building your parlay, hit up the MLB expert betting guide and the latest MLB picks to see where the edges lie.

West Coast Woes: Mariners Searching for Answers

Seattle started the trip with two losses in Baltimore, dropped two more in Queens—including a rough 7-3 defeat in the Little League Classic—and things haven’t improved in Philly. After a 12-7 loss Monday, they fell again Tuesday despite tying the game late.

Eugenio Suarez delivered a clutch two-run double to even the score in the seventh, but J.T. Realmuto fired back with a two-run homer in the eighth to seal the 6-4 Phillies win.

Manager Dan Wilson stayed focused despite the frustration: “We’ve just got to continue to come out each day ready to play. Tonight, these guys were ready to fight.”

Castillo Gets the Ball in Finale

Seattle turns to veteran right-hander Luis Castillo (8-6, 3.48 ERA), hoping to stop the bleeding. His last outing? One of the worst this season—six runs allowed over four innings, including three homers, against the Mets.

Castillo will need to be sharp, especially after shaky starts from teammates Logan Gilbert and Bryce Miller, who gave up 10 runs combined in the first two games of the series.

Phillies Counter with Luzardo

Jesús Luzardo is having a solid year and takes the mound for Philly. He’s 11-6 with a 4.21 ERA and recently snapped a five-game win streak. Still, he allowed just three runs over six strong innings in a 3-2 loss to Washington.

Luzardo credits his sweeper for recent success: “It’s been good for me lately, throwing it in high-leverage counts has been key.”