Thompson was removed after the top of the fifth inning with lower back soreness that he said has been nagging him in recent days. He said he felt it more on what Roberts called a "funky" swing in the fourth inning, but Thompson said he expects it to respond to treatment.
Thompson was replaced in right field by Yasiel Puig, who singled in a run and walked in three plate appearances.
Crawford, who has had left hamstring issues in the past, said he felt his right hamstring tighten during warmups Friday. He legged out an infield single as a pinch-hitter in the eighth inning Saturday night, but Roberts then used pitcher Alex Wood to pinch-run to minimize the chances of further injury.
Crawford said he did not think the injury was bad enough to send him to the disabled list.
Should the injuries to Thompson or Crawford linger, Scott Van Slyke is nearing a return from a rehab assignment for a lower back disk issue.
Ken Gurnick has covered the Dodgers for MLB.com since 2001. This story was not subject to the approval of Major League Baseball or its clubs.