Novak Djokovic's net worth — Having been hailed as the World's no. 1 in tennis in 2011, fans are wondering how much does Serbia's most popular male athlete really earn.

Born on May 22, 1987 in Belgrade, Yugoslavia, the tennis superstar has won five Grand Slam singles titles (2008, 2011 and 2012 Australian Open championships, the 2011 Wimbledon Championships, and the 2011 US Open) making him the first Serbian player to win a Grand Slam singles title as well as the youngest player in the open era to make it to the semi-finals of all four Grand Slam events both separately and consecutively. His 2011 victories also made him the 6th player in the open era to score three Majors in just a year.

The multi-lingual (he speaks Serbian, French, Italian, German and English fluently) athlete has been wielding tennis rackets and serving balls since the age of four. Famous Yugoslav player Jelena Genic, first saw his potential when he was six, and by the age of 12 he went to Germany to enlist in a special tennis academy, where would hone his skills for the years.

Djokovic, who has a net worth of $130 million, has an estimated winnings and salary (2014-2015) of $17,200,000 and sponsorship earnings of $31, 000,000 for this year, according to The Richest. He reportedly traded his sponsorship from Adidas to sportswear brand Sergio Tacchini endorsed by his childhood heroes John McEnroe and Pete Sampras.

In 2007, at the age of 19 years and ten months, he was the youngest player to sweep the Men's Championship at the Miami Masters. He is also the youngest player to overthrow the top 3 players in succession at the 2007 Canada Masters, and the youngest player to make it to the semi-finals of all four Grand Slams (Australian Open, Wimbledon, French Open and US Open) in 2007-2008, as per IMDB.

He went home with a bronze medal from the Beijing Olympics in 2008.

In 2011, he gained the most consecutive championship titles in a season with 4 titles at the beginning of the year. And in July 4, 2011, he was ranked #1 male tennis player in the world. Djokovic al defeated Spanish player Rafael Nadal in the final match of Wimbledon in the same year, earning him the 2011 Wimbledon title.

He beat Roger Federer after competing for more than 4 hours at the Wimbledon finals on July 7, 2014. He also defeated him on July 12 this year at the 2015 Wimbledon finals, Celebrity Net Worth reported.

He has already championed the Australian Open four times, Wimbledon twice and the US Open once as of July 2014.

Djokovic also invests in a number of businesses run by his family in their country. They have ventured in real estate and commodities trading among others. Taking advantage of his popularity, they launched themed coffee shops called "Novak Café" in their place.