LONDON — International captain Nick Price rounded out his staff for the 2013 Presidents Cup with the United States by naming Japan's Shigeki Maruyama and fellow Zimbabweans Mark McNulty and Tony Johnstone as his assistants Tuesday. The Presidents Cup, which pits a 12-man team from the United States against a lineup of international players from outside Europe, will be played at Muirfield Village in Dublin, Ohio, during the first week of October 2013. US captain Fred Couples confirmed Jay Haas as one of his assistants Tuesday and will name his remaining two assistants in the coming months. — Agencies