Novak Djokovic was born on May 22, 1987, in Belgrade, Serbia. He began playing tennis at the age of four. At 13, he was sent to the Pilic Academy in Munich, Germany, and began his international career in 2001. At 16, after winning five ITF tournaments, Djokovic became the 40th best junior tennis player. In 2010, Djokovic led the Serbian national team to its first Davis Cup win. He went on to win 43 consecutive matches in 2011—the only player in the world to achieve such a run. Among his 2011 victories, he won at Wimbledon, and became the world's No. 1 tennis player. In 2012, Djokovic won at the Australian Open, and made it to the Wimbledon semifinals, but was beaten by Roger Federer.