Justin Verlander (11-7) lost his second straight start for the Tigers and also officially snapped a 63-game streak of pitching at least six innings in a start. A pair of walks, an infield single and an error in the fourth inning were key to a four-run rally that put the Red Sox up for good.
Boston starter Josh Becket left the game in the third inning with a back injury, so Clayton Mortensen (1-0) earned his first win of the season in relief, while Morales picked up his first save.
The loss combined with a win by the Chicago White Sox, pushed the Tigers 2.5 games behind the ChiSox in the Al Central Division. The two teams wrap up their three-game series on Wednesday at 7:10 p.m. ET.
For more on the series, stay locked with this StoryStream. For more on the Tigers, visit Bless You Boys. For the Boston perspective, just head to Over The Monster. And for more MLB news and analysis, head over to Baseball Nation.