Krejci (back) has been ruled out for Wednesday's game against the Knicks, Kevin Chouinard of the Hawks' official site reports.
Krejci sustained the lower back contusion on a hard fall in the fourth quarter of Monday's win over the Magic. The 24-year-old's next chance to play will come after the All-Star break against the Magic on Feb. 20. Caris LeVert and Terance Mann are candidates for an uptick in playing time with Krejci on the shelf.