Roger Federer. Source: AAP
Format: mixed teams (men's singles, women's singles, mixed doubles)
Prize money: $1 million
Drawcards: Roger Federer, Alexander Zverev, Stefanos Tsitsipas, Matt Ebden, Serena Williams, Angelique Kerber, Ashleigh Barty, Garbine Muguruza
2018 champions: Switzerland (Roger Federer and Belinda Bencic)
Brisbane International, Queensland Tennis Centre, December 30 - January 6
Naomi Osaka. Source: AAP
Format: men's and women's singles and doubles
Prize money: $US1.59 million
Drawcards: Rafael Nadal, Andy Murray, Nick Kyrgios, Alex de Minaur, John Millman, Naomi Osaka, Sloane Stephens, Petra Kvitova, Daria Gavrilova, Samantha Stosur
2018 singles champions: Nick Kyrgios and Elina Svitolina
Hobart International, Domain Tennis Centre, Hobart, January 7-12
Mihaela Buzarnescu. Source: AAP
Format: women's singles and doubles
Prize money: $US250,000
Drawcards: Eugenie Bouchard, Mihaela Buzarnescu, Alize Cornet, Heather Watson, Mona Barthel
2018 singles champion: Elise Mertens
Sydney International, Olympic Park, January 6-12
Stefanos Tsitsipas. Source: AAP
Format: men's and women's singles and doubles
Prize money: $US1.41 million
Drawcards: Simona Halep, Angelique Kerber, Naomi Osaka, Sloane Stephens, Petra Kvitova, Karolina Pliskova, Ashleigh Barty, Garbine Muguruza, Daniil Medvedev, Kyle Edmund, Stefanos Tsitsipas, Alex de Minaur, Jo-Wilfried Tsonga, John Millman
2018 singles champions: Daniil Medvedev and Angelique Kerber
FAST4 Showdown Australia, Qudos Bank Arena, Sydney, January 7
Nick Kyrgios. Source: AAP
Format: exhibition men's singles and doubles
Drawcards: Rafael Nadal, Nick Kyrgios, Grigor Dimitrov, Milos Raonic
World Tennis Challenge, Memorial Drive Tennis Centre, Adelaide, January 7-8
Victoria Azarenka. Source: AAP
Format: men's and women's legends exhibition singles and doubles
Drawcards: Alexander Zverev, Borna Coric, Pat Cash, Henri Leconte, Victoria Azarenka, Coco Vandeweghe
Juan Martin Del Potro. Source: AAP
Kooyong Classic, Melbourne, January 8-10
Format: men's and women's exhibition singles
Drawcards: Juan Martin Del Potro, Kevin Anderson, Marin Cilic, Bernard Tomic, Richard Gasquet, Coco Vandeweghe, Peng Shuai
2018 champions: Pablo Carreno Busta and Belinida Bencic
Australian Open, Melbourne Park, January 14-27
Novak Djokovic. Source: AAP
Format: men's singles and doubles, women's singles and doubles, mixed doubles
Prize money: $60.5 million
Drawcards: Novak Djokovic, Rafael Nadal, Roger Federer, Alexander Zverev, Andy Murray, Alex de Minaur, Nick Kyrgios, John Millman, Serena Williams, Simona Halep, Angelique Kerber, Caroline Wozniacki, Naomi Osaka, Ashleigh Barty, Samantha Stosur, Daria Gavrilova
2018 champions: Roger Federer and Caroline Wozniacki
