Gabriel Vilardi will be sidelined for both L.A. Kings rookie camp and training camp due to a back sprain — an injury that flared up during the summer, said general manager Rob Blake in a statement. The team announced the injury Thursday, one day before the start of rookie camp. The Kings stated that Vilardi will not take part in on-ice activities, and while he has started the rehabilitation process, there is no timetable right now for his return.