Moreland was injured running to first base in Tuesday’s 7-3 victory over the Padres.
Putting Moreland on the disabled list would open a 25-man roster spot for Roy Oswalt, who will start Friday against the Colorado Rockies in Arlington. But the Rangers would still have to clear a spot on the 40-man roster for Oswalt.
“I think it’s safe to say we’re expecting it to be a DL,” Rangers GM Jon Daniels said. “Not too often a guy comes off the field holding his hamstring and it isn’t at least two weeks. But we’ll make sure it’s 100 percent.”
Moreland will see Dr. Keith Meister on Thursday.