In preparation for the 2012 Olympic Games in London, we're profiling 20 of the top medal contenders.

He’s been world No. 1, won three of the four major titles, and led Serbia to its first Davis Cup championship. But when Novak Djokovic scans the sporting landscape, he views the Olympic Games as the peak.

“The Olympic Games are the pinnacle of all sports, in my opinion,” Djokovic said. “I had this honor to be representing my country four years ago in Beijing. I won the bronze medal, so it was one of the best achievements and best feelings I had as a professional athlete.”

In the aftermath of his Wimbledon semifinal loss to Roger Federer, the 2011 Wimbledon champ is eager to medal in London and joins Federer as the two favorites for gold.

“Knowing that I had great success in 2011 on Wimbledon grassa ctually gives me confidence before this year's Olympic Games,” Djokovic said. “It is very emotional because it is not just you who matters there, it's the whole nation.”

Previous Olympic Singles Results

Beijing, 2008: Lost in semifinals to Rafael Nadal; won bronze-medal match against James Blake

Previous Olympic Doubles Results

Beijing, 2008: Lost in first round with Nenad Zimjonic to Martin Damm and Pavel Vizner

More Olympic Profiles:

—Agnieszka Radwanska
—Ana Ivanovic
—Andy Murray
—Andy Roddick
—Angelique Kerber
—Jo-Wilfried Tsonga
—John Isner
—Juan Martin del Potro
—Kei Nishikori
—Kim Clijsters
—Li Na
—Maria Sharapova
—Milos Raonic
—Novak Djokovic
—Petra Kvitova
—Roger Federer
—Serena Williams
—Tomas Berdych
—Venus Williams
—Victoria Azarenka