Argentine President Cristina Fernandez de Kirchner (R) holds a racket given to her as a gift by Swiss tennis player Roger Federer, at the Olivos Presidential residence in Buenos Aires December 12, 2012. Number two Federer will face Argentina’s Juan Martin Del Potro in an exhibition match on Wednesday. REUTERS/Handout-Presidencia/Handout (ARGENTINA – Tags: SPORT TENNIS POLITICS ENTERTAINMENT) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
