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.
Benedict Cumberbatch's dramatic reading of R. Kelly lyrics is just what you need
Jordana Brewster on Paul Walker: 'He was an enormous presence in my life'