Mariners Game #138 Preview and Discussion: 8/31/26, Mariners at Red Sox

BOSTON, MASSACHUSETTS - AUGUST 18: Mickey Gasper #30 of the Boston Red Sox celebrates with the mascot Wally head after hitting a home run against the Arizona Diamondbacks during the sixth inning at Fenway Park on August 18, 2026 in Boston, Massachusetts. The Red Sox defeat the Diamondbacks 9-4. (Photo by Maddie Meyer/Getty Images) | Getty Images

The Mariners head to Fenway to play the Red Sox. It’s Heated Rivalry Night at Fenway, but I will NOT be doing the recap, so consider yourselves all spared.

Lineups:

All set for the first of three in Boston. #TridentsUppic.twitter.com/0Wqd82TkJX

— Seattle Mariners (@Mariners) August 31, 2026

Back at our house. pic.twitter.com/jlOHVRTObC

— Red Sox (@RedSox) August 31, 2026

News:

Cooper Criswell has been officially Unfurled, activated off the 60-day IL. But Nick Davila has taken his place on the IL with an SC joint sprain, a new injury for me to google after this. Everything I know about the human body and how it breaks has been learned both a) because of baseball and b) against my will.

At this point Brendan Donovan is just a concept to me, like dark matter, but here.

Brendan Donovan taking grounders at 3B pic.twitter.com/SBKcqhUnQE

— Shannon Drayer (@shannondrayer) August 31, 2026

Game information:

Game time: 3:45 PT

TV: Mariners dot TV (Goldsmith/Hyphen)

Radio: 710 AM Seattle Sports (Hill/Mentink)