"Today it felt better," Scioscia said, "but they want to give him one more day to get over it and he's right now scheduled to play tomorrow."
Hamilton went 2-for-4 with a double in his rehab debut with the Salt Lake Bees on Thursday night, but was jammed in the ninth inning while facing hard-throwing Dodgers prospect Jose Dominguez and didn't feel right while taking batting practice the following afternoon.
Hamilton, out since April 8, was hopeful of being activated off the disabled list by Monday's series opener in Seattle, but that appears unlikely at this point.
"We're going to take this one day at a time with Josh and see where he is," Scioscia said.
Alden Gonzalez is a reporter for MLB.com. Read his blog, Gonzo and "The Show", and follow him on Twitter @Alden_Gonzalez. This story was not subject to the approval of Major League Baseball or its clubs.