The Mariners catcher added another RBI with a sacrifice fly in the next inning while Mike Carp went 2-for-4 with a solo shot as Seattle claimed the opener of a three-game series.
Blake Beavan (6-6) stymied the Royals on one run over 6 2/3 innings, yielding four hits while walking one and striking out six.
Kansas City's Jeremy Guthrie (0-2) was roughed up for 11 hits over 5 1/3 frames, allowing six runs.
Salvador Perez collected the Royals' only RBI.
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