Cruz hasn't pitched since April 23 because of a sprained right ankle and told the club Tuesday afternoon he was still experiencing some discomfort. The Astros went ahead and decided to put him on the DL because he'll be out for at least another week, considering he'll have to make a Minor League appearance to face hitters before returning.
"He went out and threw the ball pretty well, but he still said it bothered him," Houston manager Brad Mills said. "We thought, to be safe for him and to make sure he's 100 percent and it doesn't linger, to go ahead and put him on the DL."
Cruz, a Rule 5 Draft selection last December, is 1-0 with a 2.08 ERA in seven appearances this year in his first Major League season. Del Rosario has appeared in a handful of games for the Astros the past two seasons and has a 3.14 ERA in 11 appearances at Oklahoma City this year.