Swiss tennis champion, Roger Federer, hopes to be in shape for the 2016 Olympics in Brazil.

The World No. 2 is in Sao Paolo for a four-day exhibition tour.

The Brazil exhibition will also feature stars such as Russia's Maria Sharapova, American Serena Williams and Belarus' Victoria Azarenka, the world's top ranked women’s player.

Federer, the 17-time Grand Slam champion, will face France's Jo-Wilfried Tsonga and Spain's David Ferrer until the end of the week.

Federer said he would work hard to remain among the world's top-ranked players. -- ANC Dateline Philippines, Dec. 7, 2012