It had been 30 years since the Royals won their last championship, a span of 10,962 days. But after one last dramatic comeback in the ninth inning — their eighth comeback victory this postseason — the Royals stormed past the Mets with a five-run 12th and clinched their first World Series since 1985 with a 7-2 win over the Mets on Sunday night at Citi Field.