The second half of the season has begun, but the Yankees’ offense looked a lot like the one they had in the first half of the season.

After Giancarlo Stanton’s two-run home run in the first inning, the New York Yankees went down quietly in a 7-2 loss to the Colorado Rockies at Coors Field.

The Yankees (49-43) led 2-0 after two batters, but managed only six hits the rest of the way and drew just one walk all night in Casey’s first game as hitting coach.

Instead it was the Rockies (35-57), owners of the third-worst record in the majors, who delivered the boom. 

Their offense, led by former Yankees assistant hitting coach Hensley Meulens, crushed three home runs — one off starter Carlos Rodon and two more off the bullpen.

The loss, coupled with the Red Sox’s win over the Cubs, moved the Yankees into a last-place tie in the AL East. It’s the first time since 1992 that the Yankees have been tied for last place this late in a season.