['batterName | Harper', 'homeRunNumber | 19th', 'pitchNumber | first', "pitcherName | Medlen's", 'strikeTrajectory | into_the_seats_in_left-center', 'strikingType | opposite-field_shot']
Harper drove Medlen's first pitch into the seats in left-center, an opposite-field shot for the rookie's 19th homer of the season.