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The Seattle Mariners dominated the Washington Nationals 10–2 on June 12 at Nationals Park, with the visiting offense overwhelming a struggling home pitching staff. Seattle's lineup produced 11 hits and 3 home runs while driving in 9 runs, posting a .719 OPS despite a modest .238 batting average. The Mariners' pitching was equally impressive, allowing just 4 hits and 2 earned runs while striking out 8 batters and posting a 3.57 ERA. Washington managed only 4 hits with 2 home runs and 2 RBIs, recording an anemic .739 OPS; the Nationals' pitching staff surrendered 11 hits and 10 earned runs with a bloated 4.74 ERA. The decisive trend was Seattle's power advantage—three home runs versus Washington's two—combined with the Mariners' ability to limit damage on the mound while the Nationals' pitchers struggled with command, allowing the visitors to build an early lead they never relinquished. The lopsided result suggests Seattle's rotation depth may give them an edge in this matchup going forward.