The Dallas Mavericks voided the contract for Rashard Lewis after discovering that the veteran forward needed surgery on his right knee.

"It came to our attention during Rashard Lewis' physical that he is in need of a medical procedure on his right knee," Mavs president of basketball operations Donnie Nelson said in a statement released by the team. "We wish him all the best for a speedy recovery and continued success in his remarkable career."

Lewis signed a one-year contract for the veteran's minimum with the Mavs last week.