Red Sox vs Mariners Prediction 1 September 2026
📡 After Monday’s 9-8 slugfest, it’s only natural to expect more fireworks in this series. The opener was truly wild: Seattle held an 8-5 lead after seven innings, but Boston rallied to tie it up in the ninth and walked it off in the tenth. Game two features a completely different pitching matchup, as Bryan Woo goes head-to-head with Sonny Gray. Both starters have the ability to put a lid on the early chaos that set such a frenetic pace last night.
Head-to-Head
📊 Boston have taken six of the last ten head-to-head meetings. In seven of those games, both teams combined for no more than eight runs. The June series saw scores of 6-2, 5-1, and 1-3, so yesterday’s 17-run shootout was a real outlier compared to the recent history between these clubs. Seattle, in particular, have often been held to just two or three runs against Boston’s pitching.
Head-to-head statistics Red Sox - Mariners

Boston Red Sox Team Overview
The Red Sox improved to 75-63 after an emotional extra-innings win. Jarren Duran homered, Trevor Story drove in the decisive run, and the team rallied from a three-run deficit late in the game. However, Craig Tracy had to turn to several key relievers yesterday, including Aroldis Chapman. Tonight, Boston will be looking for a deep outing from Gray, hoping to avoid turning a second straight game into a bullpen battle.
Match Results: Boston Red Sox

Seattle Mariners Team Overview
Monday’s defeat marked Seattle’s fifth straight loss, dropping their record to 64-74. Despite boasting some powerful hitters, the Mariners are averaging fewer than four runs per game this season. Last night, Randy Arozarena racked up four hits and four RBIs, while Cal Raleigh chipped in with a home run, but even an eight-run offensive outburst wasn’t enough to salvage the game. That kind of scoring surge stands out, especially given the recent stretch where Seattle have had to scrap for every run.
Match Results: Seattle Mariners
⚾ Starting Pitchers
Sonny Gray is enjoying one of the finest campaigns among Boston’s rotation, posting a 16-4 record with a 2.82 ERA and a WHIP around 1.18. Over his last five outings, Gray’s ERA stands at an impressive 2.40. In his most recent appearance, he allowed two runs across five innings, following up a dominant seven-inning shutout just prior. Gray gives the Red Sox a solid chance to restore order after yesterday’s marathon contest.
Bryan Woo enters with a 9-9 record, a 4.36 ERA, and a 1.10 WHIP. His latest start after recovering from a shoulder issue was rough-he surrendered six earned runs in just four innings. Before that, Woo delivered back-to-back scoreless outings and limited opponents to two runs over six innings in another start. His command is typically a key strength, so Boston will likely find it tougher to replicate yesterday’s offensive explosion.
⭐ Editor's Pick
Yesterday’s score understandably raises concerns about a low-scoring affair, especially after both offenses handled the opposing bullpens with confidence. However, Game 2 brings much stronger starting pitching to the mound. Gray has kept his ERA below three all season, while Woo had put together several quality starts prior to his recent rough outing. Seven of the last ten head-to-head meetings have finished with eight runs or fewer, including all three games in June. After ten tense innings last night, both managers will be counting on their starters to go deep into the game. We’re backing the under 8.5 total runs here.