Starred? I suppose that is too subjective of a word to get a consensus. The Ripkens, Cansecos, Guerreros, Martinezes and Boones immediately come to mind. But, usually one brother is head and shoulders above the other. Pedro and Ramon might be the only two that were legitimate stars at points in their careers, but not at the same time on the same team. Edit: Or, you can just read Garwilly's response if you page down more. :x I would say since the waners both made the hall of fame they were starring at the same time.