Harkless is listed questionable for Sunday's contest at Memphis due to a sore left knee.
According to Sean Cunningham of ABC 10 Sacramento, Harkless exited in the first half of Friday's 141-137 win over the Lakers with the injury, finishing with two points (1-3 FG, 0-1 3Pt), and three rebounds in eight minutes. With Harrison Barnes (foot) listed as doubtful for Sunday's game, the Kings could be forced to rely more heavily on Chimezie Metu, Marvin Bagley, Buddy Hield and Terence Davis to pick up more minutes at either forward spot if Harkless is also sidelined.