Boston Red SoxOpen full analysisVSSeattle MarinersOpen full analysis

The Seattle Mariners defeated the Boston Red Sox 3–1 on June 21 at T-Mobile Park in a low-scoring affair that fell well short of the 6.5-run Vegas total. Seattle's pitching staff dominated, recording 13 strikeouts while allowing just five hits and one earned run with a 3.62 ERA, though Boston struck first with one run. The Red Sox managed only five hits and one RBI across the lineup, striking out 13 times while posting a .692 OPS, reflecting the offensive struggles both teams faced. Seattle's own batting was equally anemic at .232 with just six hits, but the Mariners capitalized on their limited opportunities, driving in three runs on one home run to secure the victory. Boston's pitching permitted six hits and three earned runs with a 3.85 ERA, unable to match Seattle's stingy performance on the mound. The game underscored both teams' difficulty generating consistent offensive production, with strikeouts accounting for much of the offensive futility. Seattle's pitching depth will be critical as the Mariners aim to build on this defensive showcase heading into the second half.