Charlie Blackmon had four hits and scored four runs and the Colorado Rockies roughed up Erick Fedde in his major league debut, beating the Washington Nationals 10-6 on Sunday in the opener of a day-night doubleheader.
Blackmon had four singles, while DJ LeMahieu had three hits, including two doubles, and scored twice. Nolan Arenado added three hits and two RBIs.
Fedde (0-1) allowed 10 hits and seven runs - five earned - in four innings while striking out three.
The 2014 first-round selection loaded the bases in the first inning before recording his first out on Gerardo Parra's double-play groundout that scored Blackmon. Ramiel Tapia's single scored LeMahieu one batter later and Colorado led 2-0 after the first inning.
Kyle Freeland (11-7) went five innings, allowing nine hits and four runs while striking out four.