Chicago Bulls forward Carlos Boozer will miss Monday's game against the Memphis Grizzlies because of a sprained left ankle, the team said on its website (nba.com/bulls) on Sunday.
Boozer was injured in Saturday's win over the Miami Heat and left Chicago's United Center wearing a walking boot.
His status is currently day-to-day and there is no timetable for his return.
Boozer is averaging 20.1 points and 10.1 rebounds per game despite also missing the first 15 games of the season with a broken hand.
Chicago is already without center Joakim Noah who remains sidelined following thumb surgery.