Uribe, who has been on the disabled list since July 24, was expected to be ready to return as soon as his 15 days were up. But the injury hasn't progressed as planned, manager Don Mattingly said on Saturday.
"I don't know if there's a setback," Mattingly said. "It's just that he's not really healing. So it kind of put up some red flags that we've got to look a little deeper into it."
Both Mattingly and Uribe have insisted injuries -- both the current hip problem and a prior injury to his hip flexor that also landed him on the DL -- have had nothing to do with Uribe's struggles this season.
The 11-year veteran is hitting just .204 with four homers after signing a three-year deal in the offseason.
"He wasn't complaining about it," Mattingly said when asked if the current injury might have originated before Uribe exited the lineup in the midst of a July 23 game. "He wouldn't have played if he couldn't run. ... He was doing things then [that he can't do now]."