Bulls guard Lonzo Ball has been diagnosed with a small meniscus tear in his left knee, according to The Athletic's Shams Charania.
The team announced Thursday, Ball will undergo arthroscopic surgery on his left knee and is expected to return in six-to-eight weeks.
Bulls coach Billy Donovan had addressed the possibility of surgery on Wednesday, noting “we haven’t gotten to that point,” per NBC Sports Chicago's K.C. Johnson. Donovan had told reporters Ball was receiving therapeutic treatment to try to alleviate knee pain.