The Seattle Mariners connected with a big swing early in their heavyweight fight with the Houston Astros – and then they did again.

After applying early pressure in the first two games of the pivotal series, the Mariners’ offense erupted for seven runs and seven hits while knocking Houston’s starter out in the second inning of the series finale Sunday.

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Swings from J.P. Crawford and Cal Raleigh did most of the damage.

Crawford blasted a towering grand slam and Cal Raleigh followed with a two-run shot two batters later to grab a 7-0 advantage.

Josh Naylor and Jorge Polanco got the big inning started with a pair of infield singles, and Eugenio Suárez loaded up the bases with a line-drive single.

After a bases-loa

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