Trea Turner and Josh Naylor will be front and center on Monday night when the Philadelphia Phillies welcome the Seattle Mariners to Citizens Bank Park.
Seattle limps into this series after dropping three of its last four, including a tough loss to the Mets on Saturday that put a dent in their momentum. The Mariners entered Sunday sitting at 68-56, good for second place in the AL West, trailing the Astros by just a game and a half in a race that seems destined to go down to the wire.
Philadelphia, on the other hand, wrapped up its weekend with a fireworks show in Washington, outslugging the Nationals to salvage a split in their four-game set. The Phillies hit the new week at 71-53, enjoying a comfortable 5.5-game cushion over the Mets in the NL East.
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How to watch Philadelphia Phillies vs Seattle Mariners on TV & stream live onlineNational TV channel: MLB NetworkLocal TV channel: NBCS-PH, ROOT Sports NWStreaming service: Fubo
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Philadelphia Phillies will take on Seattle Mariners in a highly anticipated MLB game on Monday, August 18, 2025, at 6:40 pm ET/ 3:40 am PT at Citizens Bank Park in Philadelphia, Pennsylvania.
DateMonday, August 18, 2025First-Pitch Time6:40 pm ET/ 3:40 am PTVenueCitizens Bank ParkLocationPhiladelphia, PennsylvaniaStreaming the game with a VPN
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Philadelphia Phillies vs Seattle Mariners team newsPhiladelphia Phillies team news
The Phillies counter with Ranger Suárez, who has been steady all year. The lefty enters his 19th start with an 8-6 mark, 3.28 ERA, and 101 strikeouts in 112.1 innings.
Power is the name of the game in Philly’s lineup. Kyle Schwarber has already launched 43 homers and driven in 102 runs, ranking near the very top of MLB in both categories. Turner (.291) brings balance with his contact skills, while Bryce Harper (19 HR, 28 doubles) and Nick Castellanos (16 HR, .253 AVG) add plenty of firepower to a dangerous middle of the order.
Seattle Mariners team news
For Seattle, Cal Raleigh continues to be the engine of their offense, swinging one of the most powerful bats in baseball. He leads not only his team but the entire league with 47 home runs and 102 RBI on the year. Raleigh brings a three-game hitting streak into Philly and has been scorching lately, batting .438 with a pair of doubles, two long balls, and four RBI across his last five outings.
Josh Naylor has been the Phillies’ model of consistency, pacing the club with a .286 average, while Julio Rodríguez (.259, 24 homers) and Eugenio Suárez (.235, 38 homers) provide punch for the Mariners. Suárez is also riding a hot streak, notching hits in five straight games.
On the mound, Logan Gilbert gets the nod for Seattle, making his 18th start of the season. The right-hander comes in with a 3-4 record, 3.31 ERA, and 124 strikeouts in 89.2 innings. He was sharp his last time out against Baltimore but didn’t factor into the decision.
Philadelphia Phillies vs Seattle Mariners projected starting pitchersDatePhilliesMariners08/18/2025Ranger SuarezLogan Gilbert08/19/2025Cristopher SanchezBryce Miller08/20/2025Jesús LuzardoLuis CastilloPhiladelphia Phillies vs Seattle Mariners head-to-head record DateCompetitionHome TeamAway TeamScore05.08.24MLBSeattle MarinersPhiladelphia Phillies0 – 604.08.24MLBSeattle MarinersPhiladelphia Phillies6 – 503.08.24MLBSeattle MarinersPhiladelphia Phillies10 – 227.04.23MLBPhiladelphia PhilliesSeattle Mariners1 – 027.04.23MLBPhiladelphia PhilliesSeattle Mariners6 – 5More MLB news and coverage