The Chicago Sun-Times reports:

Luol Deng playing with broken left thumb

Before the game Monday against the Sacramento Kings, the Bulls revealed that forward Luol Deng has played with a fractured left thumb for about a week.

”He hurt it in practice, I think right before the Lakers game [on Dec. 15],” Bulls coach Vinny Del Negro said. ”It’s been bothering him a little bit, but he’s been able to fight through it.”

The injury is on Deng’s off hand, allowing him to play through it.

”It’s something that will heal on its own,” Del Negro said. ”It’s his left hand, so we just have to be cautious with it.”