<P> Djokovic won his fifth title of the year at the BA - CA TennisTrophy in Vienna, defeating Stanislas Wawrinka in the final . His next tournament was the Madrid Masters, where he lost to David Nalbandian in the semi-finals . Djokovic, assured of finishing the year ranked No. 3, qualified for the year - ending Tennis Masters Cup, but did not advance beyond the round robin matches . He received the Golden Badge award for the best athlete in Serbia, and the Olympic Committee of Serbia declared him the best athlete in the country . </P> <P> Djokovic played a key role in the 2007 play - off win over Australia by winning all his matches and helping promote the Serbia Davis Cup team to the 2008 World Group . In Serbia's tie against Russia in Moscow in early 2008, Djokovic was sidelined due to influenza and was forced to miss his first singles match . He returned to win his doubles match, teaming with Nenad Zimonjić, before being forced to retire during his singles match with Nikolay Davydenko . </P> <P> Djokovic started the year by playing the Hopman Cup with fellow Serbian world No. 3 Jelena Janković . While he won all his round - robin matches, the team lost 1--2 in the final to the second - seeded American team of Serena Williams and Mardy Fish . At the Australian Open, Djokovic reached his second consecutive Grand Slam final without dropping a set, including a victory over two - time defending champion Federer in the semi-finals . By reaching the semi-finals, Djokovic became the youngest player to have reached the semi-finals in all four Grand Slam events . In the final, Djokovic defeated unseeded Frenchman Jo - Wilfried Tsonga in four sets to earn his first Grand Slam singles title . This marked the first time since the 2005 Australian Open that a Grand Slam singles title was not won by Federer or Nadal . </P> <P> Djokovic's next tournament was the Dubai Tennis Championships, where he lost in the semi-finals to Roddick . At the Pacific Life Masters in Indian Wells, Djokovic won his ninth career singles title, defeating Mardy Fish in the final . Djokovic won his tenth career singles title and fourth Master Series singles crown at the Internazionali d'Italia in Rome after defeating Wawrinka in the final . The following week at the Hamburg Masters, he lost to Nadal in the semi-finals . At the French Open, Djokovic was the third - seeded player behind Federer and Nadal . He lost to Nadal in the semi-finals in straight sets . </P>

When did djokovic win his first grand slam
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