It will be a "tragedy" if Madonna and her ex-husband Guy Ritchie don't resolve their custody battle over their 15-year-old son Rocco, a British judge said Monday. Judge Alistair MacDonald, who has been hearing a legal dispute between the queen of pop and her filmmaker ex-husband, said Rocco is a mature young man who is "very great credit" to his parents, and it would be best if both can spend time with him.