<p>World number one Rafael Nadal will take on Bolivian Hugo Dellien in the Australian Open first-round next week while Serena Williams faces Anastasia Potapova in her quest for a 24th Grand Slam title.</p>.<p>The Spaniard is attempting to match Roger Federer's record 20 Grand Slam singles titles on his least favourite surface, having won in Melbourne just once, back in 2009.</p>.<p>Australian Nick Kyrgios could be waiting for him in the fourth round, the draw revealed Thursday.</p>.<p>Defending champion Novak Djokovic will start his bid to lift a record eighth Australian Open title against Jan-Lennard Struff.</p>.<p>The Serb had a fine 2019, winning five titles including at Melbourne Park and Wimbledon on the way to ending the year as number two, behind only Nadal.</p>.<p>Fresh from helping his country win the ATP Cup, he will start his drive to extend his incredible Melbourne run -- he holds a 68-8 record -- against a German who crashed at the first hurdle last year.</p>.<p>Djokovic could meet Greek young gun Stefanos Tsitsipas in the last eight.</p>.<p>The ageless Federer, 38, is up against American Steve Johnson in the third quarter of the men's draw as he targets a seventh Australian Open title, winning his last in 2018.</p>.<p>Williams, who is seeking to match Australian Margaret Court's record 24 major singles titles, gets underway against 90th ranked Russian Potapova with a potential quarter-final against defending champion Naomi Osaka.</p>.<p>Seeded eighth, she heads into the tournament on the back of ending a three-year title drought by winning the Auckland Classic. She is gunning for an eighth Australian crown and her first Slam title since Melbourne in 2017.</p>.<p>Her sister Venus has a blockbuster first-round clash against exciting young American Coco Gauff, with the winner potentially facing Osaka in the third round. Third seed Osaka starts her title defence against Marie Bouzkova.</p>.<p>World number one Ashleigh Barty opens against Ukraine's Lesia Tsurenko, with the French Open champion on a collision course with last year's finalist Petra Kvitova in the last eight.</p>.<p>Fourth seed Simona Halep has a tough opening task against Jennifer Brady, who beat Barty and Maria Sharapova at the Brisbane International.</p>.<p>Second seed Karolina Pliskova takes on Kristina Mladenovic. </p>
<p>World number one Rafael Nadal will take on Bolivian Hugo Dellien in the Australian Open first-round next week while Serena Williams faces Anastasia Potapova in her quest for a 24th Grand Slam title.</p>.<p>The Spaniard is attempting to match Roger Federer's record 20 Grand Slam singles titles on his least favourite surface, having won in Melbourne just once, back in 2009.</p>.<p>Australian Nick Kyrgios could be waiting for him in the fourth round, the draw revealed Thursday.</p>.<p>Defending champion Novak Djokovic will start his bid to lift a record eighth Australian Open title against Jan-Lennard Struff.</p>.<p>The Serb had a fine 2019, winning five titles including at Melbourne Park and Wimbledon on the way to ending the year as number two, behind only Nadal.</p>.<p>Fresh from helping his country win the ATP Cup, he will start his drive to extend his incredible Melbourne run -- he holds a 68-8 record -- against a German who crashed at the first hurdle last year.</p>.<p>Djokovic could meet Greek young gun Stefanos Tsitsipas in the last eight.</p>.<p>The ageless Federer, 38, is up against American Steve Johnson in the third quarter of the men's draw as he targets a seventh Australian Open title, winning his last in 2018.</p>.<p>Williams, who is seeking to match Australian Margaret Court's record 24 major singles titles, gets underway against 90th ranked Russian Potapova with a potential quarter-final against defending champion Naomi Osaka.</p>.<p>Seeded eighth, she heads into the tournament on the back of ending a three-year title drought by winning the Auckland Classic. She is gunning for an eighth Australian crown and her first Slam title since Melbourne in 2017.</p>.<p>Her sister Venus has a blockbuster first-round clash against exciting young American Coco Gauff, with the winner potentially facing Osaka in the third round. Third seed Osaka starts her title defence against Marie Bouzkova.</p>.<p>World number one Ashleigh Barty opens against Ukraine's Lesia Tsurenko, with the French Open champion on a collision course with last year's finalist Petra Kvitova in the last eight.</p>.<p>Fourth seed Simona Halep has a tough opening task against Jennifer Brady, who beat Barty and Maria Sharapova at the Brisbane International.</p>.<p>Second seed Karolina Pliskova takes on Kristina Mladenovic. </p>