Arizona hurler Zac Gallen entered Monday having surrendered just three homers over his previous eight starts. The Phillies matched that total in just two innings. 

Those three homers provided the Phillies enough offense to knock off a red-hot Diamondbacks team on Monday, 5-3, in Game 1 of the National League Championship Series at Citizens Bank Park. 

Kyle Schwarber walloped the first pitch Gallen hurled on the evening and deposited it about a dozen rows into the seats in right field. Bryce Harper followed four pitches later, sending a 420-foot moonshot into right-center to give the Phillies a 2-0 advantage. 

The Bank may never have been louder. 

Nick Castellanos continued his torrid pace from the NLDS, connecting in the second inning on a 93-mph Gallen fastball that caught far too much of the plate before landing in the seats in right. The solo blast was his fifth homer of the postseason. 

After surrendering a leadoff single to Corbin Carroll, Zach Wheeler retired 15 straight, including eight by strikeout. He ran into some trouble in the sixth, allowing Evan Longoria to reach with a single to open the frame before Geraldo Perdomo turned on a 94-mph fastball in on the hands and poked it to right for a two-run homer. The blast brought Arizona to within three. 

The Diamondbacks added another run in the seventh, taking advantage of a walk and a throwing error by Seranthony Dominguez, but that's as close as they would get in the contest. 

Wheeler tossed six frames, surrendering the two runs on three hits. He didn't issue a walk and whiffed eight. 

Craig Kimbrel recorded the save. 

Aaron Nola will get the ball for the Phils in Game 2, while the D-Backs counter with right-hander Merrill Kelly.

(Updating & More to come ...)