Bulls' Jalen Smith: Iffy for Saturday

Smith is questionable for Saturday's game against the Mavericks due to a concussion.

Smith is attempting to pass each step of the league's concussion protocol in time to be eligible for action Saturday. If he cannot do so, Lachlan Olbrich would handle backup center duties behind Nikola Vucevic, as Zach Collins (toe) still isn't ready to play.