Seattle Mariners @ Philadelphia Phillies Player Props, Picks and Predictions - 8/19/2025 6:45 PM EDT

We have your Seattle Mariners @ Philadelphia Phillies prop betting and game preview needs covered as the Seattle Mariners hit the road to face the Philadelphia Phillies.

Seattle Mariners @ Philadelphia Phillies Pick

Best Moneyline Odds: Philadelphia Phillies -190 (Caesars)
Best Spread Odds: Philadelphia Phillies -1.5 (+118 Caesars)
Best Total Odds: Over 8.0 (-115 Caesars)

Game Info

Date: August 19, 2025
Time: 6:45 PM EDT
Location: Citizens Bank Park, Philadelphia, PA
TV: -

Seattle Mariners @ Philadelphia Phillies Preview

The Philadelphia Phillies (72-53) are set to host the Seattle Mariners (68-58) at Citizens Bank Park. The Phillies are leading the NL East and have been in strong form, winning six of their last ten games, including a decisive 12-7 victory over the Mariners in yesterday's series opener. Their offense has been potent, ranking 3rd in batting average (.255) and 5th in on-base percentage (.324), backed by a solid team ERA of 3.78, which ranks 7th in the league. Key offensive contributors include Kyle Schwarber with 43 home runs and 103 RBIs, and Bryce Harper, who had two home runs in yesterday's game. Starting for the Phillies is Cristopher Sanchez (11-4, 2.39 ERA), who has been a consistent force on the mound, with his team winning 76.2% of his starts when favored.

The Seattle Mariners, currently second in the AL West, have experienced a more inconsistent season, reflected in their 5-5 record over their last ten outings and a three-game losing streak. Their offense boasts significant power, ranking third in MLB with 178 home runs, led by Cal Raleigh's league-high 47 homers. However, their pitching has been less consistent, with a team ERA of 5.07. Bryce Miller (2-5, 5.73 ERA) will take the mound for the Mariners, making his return from elbow issues that sidelined him since early June. Miller's previous start against the Phillies last August saw him allow four runs in 4 1/3 innings.

Historic Head-to-Head Stats and Analysis

The head-to-head history between the Seattle Mariners and Philadelphia Phillies shows a closely contested rivalry. The Mariners hold a slight edge in the all-time regular season and postseason record, with 14 wins to the Phillies' 11. In recent matchups, the Phillies have claimed 12 victories, with 5 of those coming at home, while the Mariners have tallied 13 wins, 7 of which were on the road. The most recent encounter on August 18, 2025, saw the Phillies defeat the Mariners 12-7. Looking back at recent series, the Phillies have had the upper hand, winning the last game and also securing a 6-0 victory on August 4, 2024. However, the Mariners had a strong showing in early August 2024, winning 6-5 and 10-2 in consecutive games. In 2023, the Phillies won two out of three games against the Mariners in Philadelphia, with scores of 1-0 and 6-5, while the Mariners took one game 5-3. The series in May 2022 saw the Mariners win one game 5-4, with the Phillies taking two games 4-2 and 9-0.

Pick: Philadelphia Phillies Moneyline

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The Philadelphia Phillies are the clear favorite in this matchup, and for good reason. They are playing at home, where they have shown consistent strength, and their starting pitcher, Cristopher Sanchez, has been exceptional this season with an 11-4 record and a stellar 2.39 ERA. Sanchez's team has won 76.2% of his starts when favored, indicating reliability. On the other side, Bryce Miller is returning from an elbow injury and has a higher ERA of 5.73, having struggled in his previous outing against the Phillies. The Phillies' offense is red-hot, as evidenced by their 12-7 victory yesterday, where they racked up 21 hits and 4 home runs. The sharp money is also heavily on the Phillies, with a sharp win percentage of 65.16% for the moneyline. Given the Phillies' strong home performance, their dominant starting pitcher, and the Mariners' recent struggles and Miller's return from injury, backing the Phillies on the moneyline at -190 via Caesars is a confident pick.

Top Player Prop Picks

Cristopher Sánchez (Philadelphia Phillies) - Pitcher Outs Over 17.5

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Cristopher Sánchez has been a workhorse for the Phillies, consistently going deep into games. He has hit the over on this line in 100% of his last five and ten games, with a mean of 21.4 and 21.3 outs respectively. For the season, he's hit the over 75% of the time, averaging 18.83 outs. Even at home, where he's had 10 starts this season, he's hit the over 60% of the time with an average of 19.7 outs. Given his recent form and consistency, taking the over on 17.5 pitcher outs is a strong play.
Best Odds: Over 17.5 (-200) via ESPN BET

J.T. Realmuto (Philadelphia Phillies) - Hits Over 0.5

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J.T. Realmuto has been swinging a hot bat, especially against the Mariners. He has hit the over on 0.5 hits in 60% of his last five games and 80% of his last ten games. For the season, he's hit the over 66.99% of the time. Crucially, in his only appearance against the Mariners this season, he recorded 3 hits, hitting the over 100% of the time. At home, he's hit the over 66% of the time this season. Coming off a three-hit performance yesterday, including a home run and a double, Realmuto is in excellent form to get at least one hit.
Best Odds: Over 0.5 (-220) via Fanduel

Bryce Harper (Philadelphia Phillies) - Hits Over 0.5

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Bryce Harper is another Phillies slugger in prime form. He has hit the over on 0.5 hits in 80% of his last five games and 70% of his last ten games. His season hit rate for this prop is 65.98%. Similar to Realmuto, Harper also had a perfect 100% hit rate against the Mariners in his single appearance this season, recording 3 hits. At Citizens Bank Park, he's hit the over 70.45% of the time this season. After hitting two long homers yesterday, Harper is poised for another strong offensive showing.
Best Odds: Over 0.5 (-235) via BetMGM

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