Massey went 1-for-4 with a three-run home run during Sunday's 4-2 win over Atlanta.
Massey got Kansas City on the board in the first inning, tagging Charlie Morton for a three-run shot. The long ball was Massey's 14th of the campaign, and he'll finish the regular season with a .259/.294/.449 slash line, 45 runs and 45 RBI across 356 plate appearances.