The Diamondbacks pulled off the upset Tuesday night.
Arizona topped the Phillies, 4-2, in Game 7 of the NLCS at Citizens Bank Park to clinch a spot in the World Series for the first time since 2001, when they beat the Yankees in seven games.
They will face the Rangers on Friday night in Arlington, Texas, when the World Series begins.
Down 2-1 in the fifth, the D-backs knotted things up with a Corbin Carroll RBI single before Gabriel Moreno put Arizona in front with a base knock of his own.
Arizona added another run in the seventh on a Carroll sacrifice fly.
Closer Paul Sewald tossed a scoreless ninth to finish off the job.
The young Diamondbacks, who at 84-78 squeezed into the playoffs as the final National League wild card, completed their comeback from an 0-2 hole in the NLCS by taking early leads in Games 6 and 7 to win the final two in Philadelphia.
Brandon Pfaadt struck out seven in four innings and five relievers combined to pitch their way out of late-inning jams for the surprising NL champs.
The Diamondbacks (84 wins) are just the third team in a non-shortened season in the 162-game era to reach the World Series with no more than 84 regular-season wins.
Arizona and Texas are both two years removed from last-place finishes and 100-loss seasons.
Both the D-Backs and Rangers have retractable-roof stadiums so we could have the first all-indoor World Series.
— With AP.
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