jueves 7 de agosto, 5:20 AM Swiss tennis player Roger Federer takes part in a training session on August 6, 2008 in Beijing, two days before the opening of the 2008 Beijing Olympic Games. Federer will celebrate his 27th birthday by carrying the Swiss flag at the opening ceremony of the 2008 2008 Beijing Olympic Games on August 8, 2008. AFP PHOTO/BEHROUZ MEHRI (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)