SEATTLE (AP) — Hisashi Iwakuma threw seven shutout innings for his seventh win in his last eight starts, Mike Zunino and Kyle Seager both had RBI singles off Michael Fulmer in the second inning and the Seattle Mariners beat the Detroit Tigers 3-0 on Monday night in the opener of a key three-game series.

Seattle won its fourth straight and moved within 2 1/2 games of Detroit and Boston for the second wild card in the American League thanks to another gem from Iwakuma. The right-hander allowed five hits and struck out eight, running his streak of scoreless innings at Safeco Field to 21 1/3.

In his only other start this season against Detroit in June, Iwakuma (13-7) failed to make it through the fifth inning, giving up five runs on 11 hits.

Fulmer (9-3) suffered his first loss since June 17 — also the last time the Tigers lost when he started.

Rookie Edwin Diaz pitched the ninth for his fifth save.

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