Joakim Noah has reportedly been diagnosed with a sprained thumb following the Chicago Bulls' win over the Detroit Pistons earlier this week.
The center was wearing a protective brace on his hand as he left the Palace of Auburn Hills on Wednesday.
According to ESPN, initial tests have revealed a sprain, but it is not known whether the injury will force the 29-year-old to miss game time.
The Bulls host the Memphis Grizzlies this evening.