Cincinnati started quickly with three runs in the second inning, and then really poured things on with six runs in the sixth inning en route to a 10-4 victory.
Billy Hamilton led the Reds with two hits, two runs scored, three RBIs and a walk.
Gregorius went 2 for 4 with two home runs, three runs and RBIs and a walk.
Sanchez collected three hits and three RBIs, while Judge smashed his fourth home run of the season and had two RBIs.
The home run was Harper’s eight of the season, which is just one less than his career-high nine in April.