All are invited to Nationals Park to experience the frights and delights of the CareFirst BlueCross BlueShield Haunted Pep Rally. All the ghouls and goblins in the greater DMV are gathering in Centerfield Plaza to help the Nats get ready for the 2017 MLB Postseason. Come join the fun at this free event, for fans of all ages. Those in attendance can choose from the Main Stage Mania, Zombie Zone (limited spots), or the Trick-or-Treat Kids Zone.