Phillies vs Mariners: Prediction, Lineups & How to Watch

Phillies vs Mariners: The Philadelphia Phillies look to bounce back against the Seattle Mariners after their nine-game winning streak ended in a heavy loss. Aaron Nola starts for Philadelphia against George Kirby in Tuesday’s series matchup.

Phillies vs Mariners prediction lineups and how to watch August 25 2026
Philadelphia Phillies and Seattle Mariners continue their three-game series at T-Mobile Park.

SEATTLE, United States — The Philadelphia Phillies will try to even their three-game series against the Seattle Mariners on Tuesday night after Seattle snapped Philadelphia’s nine-game winning streak with a 9-2 victory in Monday’s opener. Aaron Nola will take the mound for the Phillies, while George Kirby starts for the Mariners at T-Mobile Park.

Key Highlights

  • Philadelphia enters the game with a 73-59 record, while Seattle is 63-69.
  • Aaron Nola is 5-9 with a 5.12 ERA but has posted a 2.51 ERA across his last five starts.
  • George Kirby is 8-10 with a 4.18 ERA and is looking to recover after consecutive difficult outings.
  • Seattle’s Cal Raleigh hit three home runs in Monday’s 9-2 win over Philadelphia.

Phillies vs Mariners prediction: Can Philadelphia respond?

Philadelphia’s nine-game winning run came to an abrupt end Monday as Seattle’s offense produced five home runs. Julio Rodríguez opened the scoring with a three-run homer in the first inning before Cal Raleigh added a two-run shot, setting the tone for a dominant Mariners performance.

Raleigh went on to hit two more home runs, while Cole Young also went deep. Zack Wheeler struggled throughout his start, surrendering eight runs and four homers over just four-plus innings as Philadelphia suffered its fourth straight loss for the right-hander.

The Phillies managed only two runs, with J.T. Realmuto providing their lone home run. Seattle’s bullpen then shut down Philadelphia completely, retiring all 12 batters it faced over four perfect innings.

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Aaron Nola has found his form

The Phillies will hand the ball to Nola, who enters Tuesday’s game after one of his strongest performances of the season. Against Miami last Wednesday, the right-hander allowed one run on five hits over seven innings and struck out eight without issuing a walk.

That outing continued an encouraging stretch for Nola. He has recorded a 2.51 ERA across his last five starts after experiencing significant struggles earlier in the campaign.

His recent improvement gives Philadelphia a potential advantage, although Seattle’s lineup enters the game with considerable momentum after its power display in the series opener.

George Kirby aims to rebound

Seattle counters with Kirby, who has struggled in each of his last two appearances. The right-hander surrendered six runs on nine hits and two walks over only 3.1 innings against Milwaukee on Thursday.

Kirby struck out three in that outing and took the loss as Seattle fell 7-4. His previous start was also difficult, with Houston scoring five runs against him over 4.2 innings on August 14.

Philadelphia’s lineup could therefore have an opportunity to create early pressure, particularly if Kirby cannot regain the consistency he has shown during other portions of the season.

Phillies vs Mariners starting lineups

Philadelphia Phillies

  • Kyle Schwarber — DH
  • Trea Turner — SS
  • Bryce Harper — RF
  • Luis Arraez — 2B
  • Alec Bohm — 1B
  • Bryson Stott — 3B
  • Brandon Marsh — LF
  • Justin Crawford — CF
  • Garrett Stubbs — C
  • Starting pitcher: Aaron Nola (RHP) — 5-9, 5.12 ERA

Seattle Mariners

  • Randy Arozarena — LF
  • Dominic Canzone — RF
  • Julio Rodríguez — CF
  • Josh Naylor — 1B
  • Cal Raleigh — C
  • Cole Young — 2B
  • Taylor Ward — DH
  • J.P. Crawford — 3B
  • Brock Rodden — SS
  • Starting pitcher: George Kirby (RHP) — 8-10, 4.18 ERA
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How to watch Phillies vs Mariners

The Phillies and Mariners are scheduled to begin Tuesday’s game at 9:40 p.m. Eastern at T-Mobile Park in Seattle.

The game will be available locally on NBC Sports Philadelphia and Mariners.TV, while MLB Network will carry the matchup nationally for out-of-market viewers. MLB.TV is also listed among the streaming options.

DetailsPhillies vs Mariners
DateTuesday, August 25, 2026
First pitch9:40 p.m. Eastern
VenueT-Mobile Park, Seattle
TVNBC Sports Philadelphia, MLB Network
StreamingMLB.TV, Mariners.TV

Phillies vs Mariners score prediction

Philadelphia has a strong opportunity to respond after Monday’s blowout, particularly with Nola entering the contest in much better form than earlier in the season. Seattle’s offense, however, remains a major threat after its five-home-run performance.

Final Score Prediction: Philadelphia Phillies 6, Seattle Mariners 4.

Frequently Asked Questions

When do the Phillies play the Mariners?

Philadelphia and Seattle are scheduled to play Tuesday, August 25, 2026, with first pitch at 9:40 p.m. Eastern.

Who is starting for the Phillies?

Aaron Nola is scheduled to start for Philadelphia. He enters the game with a 5-9 record and a 5.12 ERA.

Who is starting for the Mariners?

George Kirby will start for Seattle. He is 8-10 with a 4.18 ERA.

What happened in the previous Phillies vs Mariners game?

Seattle defeated Philadelphia 9-2 on Monday, ending the Phillies’ nine-game winning streak. The Mariners hit five home runs in the victory.