CHICAGO -- Bulls forward Luol Deng will miss Saturday night's game against the Detroit Pistons because of a left calf injury, coach Tom Thibodeau said.
The veteran coach said Deng would remain day to day and isn't sure how long this latest injury will linger.
"I don't know other than what [athletic trainer] Fred [Tedeschi] tells me. He was unsure this morning, he had tightness, they wanted to work on him and he just said it could be better in a couple days," Thibodeau said.
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The Bulls will miss Deng's scoring punch on Saturday. He is averaging 19.4 points a game and has scored at least 20 in his past six contests.
"He's been playing great," Thibodeau said. He had some swelling, so he's trying to get that down."
Deng's injury is a big loss for a Bulls team already playing without Derrick Rose (knee), Jimmy Butler (turf toe) and Mike James (knee).
The news of the injury came as a surprise given Thibodeau didn't address it in his first remarks to reporters after Saturday's shootaround. Bulls center Joakim Noah revealed news of Deng's injury in response to a question about the ups and down the Bulls have already endured this season.
"I don't know if Lu's playing tonight," Noah said midway through his answer. And we just got to find a way to win at home."
Thibodeau eventually came back out to address Deng's injury with reporters.
The good news for the Bulls is that Thibodeau sounded more optimistic regarding Butler's health than he has in recent days. Rookie Tony Snell took his spot in the starting lineup.