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Home/MLB Schedule/Red Sox @ Mariners

Red Sox 1, Mariners 3 — Jun 21, 2026 Recap

Seattle Mariners beat Boston Red Sox 1-3 on Jun 21, 2026.

Played June 21, 2026

Game FAQ — score, spread, and total

Who won Boston Red Sox vs Seattle Mariners on Jun 21, 2026?

Seattle Mariners won 1-3 on Jun 21, 2026.

See methodology for grading rules and ROI calculation.

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BOS

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SEA