Philadelphia Phillies vs Seattle Mariners Prediction 8/19/25 MLB Picks Today

The Seattle Mariners and the Philadelphia Phillies meet Tuesday 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 Bryce Miller here and Miller is 2-5 with a 5.73 ERA and 39 strikeouts this season. This will be Miller’s second career start against the Phillies. Cristopher Sanchez will get the start for the Phillies and is 11-4 with a 2.45 ERA and 157 strikeouts this season. This will be Sanchez’s first career start against Seattle.

Seattle Mariners Recap

The Seattle Mariners come into this game looking to rebound from their 12-7 loss at the hands of the Phillies in Monday’s series opener to fall to 68-58 this season. After this series, the Mariners will head home for a series against the Athletics.

Mariners Lose Three Straight & 5 Of 6

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 five of their last six games as underdogs.
• The Phillies have lost three of their last four games as favorites against AL West opponents following a home win.
• The underdogs have covered the run line in six of the Mariners’ last seven games.
• The Phillies have failed to cover the run line in four of their last five home games against AL West opponents following a home win.

Seattle Mariners Player Prop Facts

• Julio Rodriguez has recorded at least one Double in four of the Mariners’ last five games as underdogs against NL opponents.
• Mitch Garver has recorded at least one hit in each of his last nine appearances with the Mariners as underdogs.
• Bryce Miller has recorded six or more strikeouts in three of his last four appearances against NL East opponents that held a winning record.
• Jorge Polanco has hit a home run in four of his last five appearances with the Mariners as underdogs.
• 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 win over the Mariners from Monday to improve to 72-53 this season. After this series, the Phillies will have a series rematch set up with the Washington Nationals.

Phillies Pick Up Back-To-Back Wins

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 Phillies have won each of their last eight night games against American League opponents.
• The Mariners have lost five of their last six games.
• The Phillies have covered the run line in each of their last nine Tuesday games against American League opponents.
• The Mariners have failed to cover the run line in nine of their last 10 night games against National League opponents.

Philadelphia Phillies Player Prop Facts

• J.T. Realmuto has recorded a Double in four of his last five home appearances against AL West opponents.
• Bryce Harper has hit at least one home run in three of the Phillies’ last four home games against AL West opponents.
• J.T. Realmuto has recorded at least one hit in each of his last nine home appearances against AL West opponents.
• Trea Turner ranks 2nd in the league in Hits (151) this season.

Total Runs Facts

• Each of the Mariners’ last eight night games against NL East opponents have gone OVER the total runs line.
• Each of the Phillies’ last four home games against AL West opponents have gone OVER the total runs line.

Seattle Mariners vs. Philadelphia Phillies Prediction

I’m backing the Phillies in this one. I get the case to be made for the Mariners at plus money, but I don’t love the matchup for Bryce Miller, in his first start back in a couple of months, as the Phillies have been better against righties all season and Miller’s struggled mightily on the road. On the other side, Sanchez has been lights out for the better part of the season at home and the Phillies have been dominant in his home starts. I’ll side with Philadelphia at home in this one.