Seattle Mariners vs Philadelphia Phillies: Game Preview, Pitching Matchup, and Odds for August 20, 2025

Wednesday, August 20th, 2025

Seattle Mariners vs. Philadelphia Phillies Game Preview – August 20, 2025

The Seattle Mariners will look to snap their four-game losing streak as they take on the Philadelphia Phillies at Citizens Bank Park. This interleague showdown brings together two playoff-contending squads, with the Phillies holding a strong position atop the NL East and the Mariners fighting near the top of the AL West.

Game Details

Seattle Mariners (68-59, second in the AL West) vs. Philadelphia Phillies (73-53, first in the NL East)

Location: Citizens Bank Park, Philadelphia
Time: 1:05 p.m. EDT

Pitching Matchup

The Mariners will send Luis Castillo (8-6, 3.48 ERA, 1.22 WHIP, 125 strikeouts) to the mound, looking to steady the rotation after a tough stretch. The Phillies counter with hard-throwing lefty Jesus Luzardo (11-6, 4.21 ERA, 1.34 WHIP, 158 strikeouts). This matchup pits two strikeout pitchers against lineups capable of putting up big numbers.

Team Records and Recent Trends

Philadelphia boasts a 39-21 record at home and an impressive overall mark of 73-53. When their offense produces at least eight hits, the Phillies are 49-24—making them tough to beat when the bats are hot. Seattle has fared better at home but remains competitive on the road at 31-34 and 68-59 overall. The Mariners’ formula for winning is simple: score at least five runs, and they’re 46-10.

This contest marks the third meeting between these two clubs this season, setting the stage for a competitive rubber match.

Top Performers to Watch

For the Phillies, slugger Kyle Schwarber has played a pivotal role with 19 doubles, one triple, 44 home runs, and 104 RBI. Over the last 10 games, Bryce Harper has been on fire, hitting .286 with three doubles, four home runs, and 11 RBI.

The Mariners are powered by Cal Raleigh, who has launched 19 doubles and 47 home runs. Julio Rodriguez has heated up, going 14 for 41 (.341) with four doubles, a triple, and three home runs in his last 10 games.

Recent Form

The Phillies have enjoyed a strong stretch, going 6-4 over their last 10 games with a .256 batting average and a 4.50 ERA, outscoring opponents by two runs. Meanwhile, the Mariners are 4-6 in their last 10, posting a .244 team batting average and a 5.56 ERA, having been outscored by seven runs.

Injury Updates

Phillies

Zack Wheeler remains on the 15-day injured list due to a blood clot, leaving a gap in the rotation.

Mariners

The Mariners are coping with several injuries, including Related Links

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