Hand specialists recommend surgery for Chicago Bulls forward Wendell Carter Jr., an operation that could sideline the teen rookie for eight to 12 weeks, the NBA club announced Friday. Carter, averaging 10.3 points and 7.0 rebounds a game in 44 appearances, suffered a left thumb injury Tuesday in a 107-100 road loss to the Los Angeles Lakers. An MRI exam brought an initial diagnosis of an acute thumb sprain, but Carter was re-examined by doctors John Fernandez and Mark Cohen on Friday and tests found instability that surgery could address.