Kemp, on the DL since May 30 with a strained right hamstring, went 1-for-4 with a double, a stolen base and two runs scored while playing seven innings in center field Monday. Dodgers manager Don Mattingly said the hamstring did not bother Kemp in his first two rehab appearances.
Kemp has been sidelined for almost a month, so the Dodgers want to make sure he gets his timing down at the plate before they activate him.
"We still feel like he needs at-bats," Mattingly said before Monday's series opener against the Giants. "I'll get a chance to talk to him tomorrow and we'll see how he feels. I don't think he wants come back until he's ready to go and has his timing."
Van Slyke, out since June 11 with left shoulder bursitis, is 2-for-12 in three rehab games. He will play Tuesday's day game with the Isotopes (Kemp won't) and then return to Los Angeles.
Mattingly said Van Slyke could be activated Wednesday, but said he's "in the same boat" as Kemp.
"He hasn't swung the bat great yet," the manager said. "We want to make sure his timing is good, too."
Austin Laymance is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.