In a postseason series, winning the first game is awfully important and can set the tone for the rest of the matchup. Ask the New York Mets, a team that had the chance of jumping ahead in the 2015 World Series against the Kansas City Royals but blew the chance in painful fashion.
In Game 1 of the 2015 series, the Mets were ahead 4-3 leading to the bottom of the ninth inning. Closer Jeurys Familia was up against Alex Gordon with one out and no runners on the basepaths. If they won, they would have stolen home field advantage throughout the series and guaranteed a split before going back to Citi Field for Game 3.