The injury -- and subsequent surgery performed by orthopedic surgeon Dr. Robert Anderson in Charlotte, N.C. -- will complicate NBA teams' efforts to evaluate the 7-footer before the June 27 draft.
The surgery "will keep Len out of basketball for four-to-six months, and the player will miss activities leading up to the draft," said a release by Sports International Group Inc., of Gaithersburg.
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"The tough part about Alex's injury is the timing," Len's agent Michael Lelchitski, said in a written statement.
"Everyone who knows Alex knows that he would have been incredible in the pre-draft workout setting. However, Alex is one of the elite prospects with arguably the biggest upside of anyone in the draft. The most important thing is his long-term health.”
Len, a projected lottery pick, averaged 11.9 points and 7.8 rebounds last season. He elected to forgo his junior season to declare for the draft.
Len said in the agency's release that he opted for surgery because "I didn't want to risk it not healing properly. I want to make sure I'm fully healthy and ready for training camp."
Len, who is from Antratsit, Ukraine, tuns 20 onl June 16. He doubled his points production and rebounding from the previous season.
Among the teams that had expressed interest in Len were the Oklahoma City Thunder. Besides its own pick, the Thunder has rights to Toronto’s first-round pick this year unless that pick happens to be in the top three.