How to Watch Mariners at Phillies (Aug. 20): Stream MLB Live, TV Channel

Luis Castillo and the Seattle Mariners will close out a three-game series against Ranger Suarez and the Philadelphia Phillies on Wednesday afternoon.

The Seattle Mariners take on the Philadelphia Phillies at Citizens Bank Park on Wednesday afternoon for the third and final game of a three-game series. The Phillies have won the first two games of the season, securing the series win already. However, they have now set themselves up for the opportunity for a three-game sweep. They won the first game by five runs, with a total of 19 runs in the game. Bryce Harper hit two balls out of the park with two runs and three RBIs on three hits, while Trea Turner had a home run and five RBIs in that win.

How to Watch Seattle Mariners at Philadelphia Phillies Today:

Game Date: Wednesday, Aug. 20, 2025

Game Time: 1:10 p.m. ET

TV Channel: ATT ROOT Sports Northwest Main, MLB.TV – Seattle Mariners, NBC Sports Philadelphia

Location: Citizens Bank Park

Live stream Seattle Mariners at Philadelphia Phillies on Fubo: Start Watching Today!

On Tuesday night, they won by two runs, 6-4. Christopher Sanchez started the game and went 6.1 innings, allowing two earned runs with a massive 12 strikeouts. Kyler Schwarber, J.T. Realmuto and Bryson Stott all homered in the win to power Philadelphia to six runs. Realmuto had three RBIs as well on two hits, the only multi-hit batter of the night for Philadelphia.

Luis Castillo will be on the mound in this last game for Seattle. The right-hander is 8-6 in decided starts this season with a 3.48 ERA and a 1.22 WHIP. The starting pitcher has 125 strikeouts over 142.1 innings, while only conceding 136 hits. Castillo’s last start came against the New York Mets, where his team won 11-9. He gave up a massive six earned runs on nine hits over four innings with five strikeouts.

Philadelphia will counter Seattle with Jesus Luzardo. The left-hander is 11-6 in his 2025 campaign with a 4.21 ERA and a 1.34 WHIP. He has given up 138 hits over 139 innings with 158 strikeouts. Luzardo gave up three earned runs on four hits against the Washington Nationals in his last start. He struck out seven batters across six innings.

What Time Is The MLB Game Between Seattle and Philadelphia On?

The Seattle Mariners at Philadelphia Phillies game will take place on Wednesday, August 20, 2025, at 1:10 p.m. ET. Tune in and catch some great Major League Baseball action.

What Channel Is The Seattle Mariners at Philadelphia Phillies Game On?

Looking to watch this game? Fans in the Seattle and Philadelphia areas can tune into ATT ROOT Sports Northwest Main and NBC Sports Philadelphia to see the action. Make sure you subscribe to Fubo now to watch this match and many other baseball games.

Live stream Seattle Mariners at Philadelphia Phillies on Fubo: Start Watching Today!

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