#highlights  #playoffs  #first round  #NHL  #National Hockey League  #Hockey  #Stanley Cup Playoffs  #Round One  #Round 1  #highlight  #highlight reel  #goal  #goals  #save  #saves  #recap  #series recap  #Pittsburgh Penguins  #Philadelphia Flyers  #battle of pennsylvania  #pittsburgh  #penguins  #philadelphia  #flyers  #jake guentzel  #Penguins win  #playoff hockey  #First Round Series Recap  #sidney crosby  #evgeni malkin  #matt murray  #Penguins advance to Second Round  #Penguins advance  #Penguins defeat Flyers