HOPMAN CUP Perth Arena, Jan 3-9 PRIZEMONEY: $1M Drawcards: Serena Williams, Andy Murray, Lleyton Hewitt, Nick Kyrgios, Gael Monfils, Sabine Lisicki, Daria Gavrilova.
2015 champions: Poland (Radwanska and Janowicz). 
Format: mixed teams' round robin and finals (men's singles, women's singles, mixed doubles).
BRISBANE INTERNATIONAL Queensland Tennis Centre, Jan 3-10 PRIZEMONEY: $2.07M Drawcards: Roger Federer, Bernard Tomic, Sam Groth, Kei Nishikori, Marin Cilic, Maria Sharapova, Simona Halep, Garbine Muguruza, Angelique Kerber, Victoria Azarenka, Sam Stosur.
2015 champions: Roger Federer and Maria Sharapova.
Format: men's and women's singles and doubles.
SYDNEY INTERNATIONAL Olympic Park, Jan 10-16 PRIZEMONEY: $1.4M Drawcards: Bernard Tomic (pictured), Tommy Robredo, Simona Halep, Sam Stosur, Agnieszka Radwanska, Petra Kvitova.
2015 champions: Viktor Troicki and Petra Kvitova.
Format: men's and women's singles and doubles.
HOBART INTERNATIONAL Domain Tennis Centre, Jan 10-16 PRIZEMONEY: $345K Drawcards: Sloane Stephens, Dominika Cibulkova, Eugenie Bouchard, Heather Watson.
2015 champion: Heather Watson.
Format: women's singles and doubles.
WORLD TENNIS CHALLENGE Memorial Drive, Adelaide, Jan 12-14 Drawcards: Marin Cilic, Fernando Verdasco, Mark Philippoussis, Mats Wilander, Goran Ivanisevic, Arantxa Sanchez Vicario.
Format: mixed teams' exhibition (men's and women's singles, mixed doubles). KOOYONG CLASSIC Kooyong Stadium, Jan 12-15 Drawcards: Nick Kyrgios, Richard Gasquet, Gilles Simon, Feliciano Lopez, David Goffin, Marcos Baghdatis.
2015 champion: Fernando Verdasco.
Format: men's exhibition singles.
AUSTRALIAN OPEN Melbourne Park,   January 18-31 PRIZEMONEY: $43.74 M Drawcards: Novak Djokovic, Andy Murray, Roger Federer, Stanislas Wawrinka, Rafael Nadal, Bernard Tomic, Nick Kyrgios, Lleyton Hewitt, Serena Williams (pictured), Simona Halep, Garbine Muguruza, Maria Sharapova, Agnieszka Radwanska, Petra Kvitova, Venus Williams, Lucie Safarova, Sam Stosur.2015 champions: Novak Djokovic and Serena Williams.