Kawhi Leonard missed the Los Angeles Clippers' game against the Atlanta Hawks on Saturday night due to a contusion in his left knee.
Leonard, who has missed two games in a row after suffering the injury on Wednesday, is day-to-day.
Doc Rivers said he was eager to develop chemistry within his team.
"There's no way we can have continuity right now. We've had one live practice with Pat, Kawhi, Sham, Paul George on the floor. One. This season. I'm talking training camp as well. So you're not going to have any continuity right now," said Rivers.