Duke locked in the final player of its six-player incoming freshman class with Wednesday’s announcement that Khaman Maluach has signed. Maluach is a 7-2, 250-pound center from South Sudan who has been mentored by former Blue Devil Luol Deng. He doesn’t have a ranking in the Rivals150 because he’s an international prospect — the same was true for Tyrese Proctor two years ago — but he is a 5-star addition and is expected to be a lottery pick in next year’s NBA draft. “I am really excited to welcome Khaman Maluach to Duke,” Duke coach Jon Scheyer said through a...