Arenado went 2-for-5 with a grand slam in Monday's loss to St. Louis.
Arenado handed the Rockies a four-run lead in the fifth inning after slugging a grand slam, but Colorado's bullpen would cough up the lead in the seventh. The 27-year-old third baseman has homered in three of his last four games, going 5-for-14 with six RBI over that stretch.