BRISBANE INTERNATIONAL

Queensland Tennis Centre, Brisbane, January 1-8

Began: 2009. Prizemoney: $1.83 million

Format: Men's and women's singles and doubles

Drawcards: Milos Raonic (world No.3) Stan Wawrinka (4), Kei Nishikori (5), Dominic Thiem (8), Rafael Nadal (9), Bernard Tomic (26); Angelique Kerber (1), Dominika Cibulkova (5), Karolina Pliskova (6), Garbine Muguruza (7), Samantha Stosur (21)

Defending singles champions: Milos Raonic, Victoria Azarenka

HOPMAN CUP

Perth Arena, January 1-7

Began: 1989. Prizemoney: $1 million

Format: Mixed teams (singles, mixed doubles)

Drawcards: Roger Federer (16), Nick Kyrgios (13), Richard Gasquet (18); Daria Gavrilova (25), Coco Vandeweghe (36), Heather Watson (76)

Defending champion: Australia (Kyrgios, Gavrilova)

HOBART INTERNATIONAL

Domain Tennis Centre, Hobart, January 6-14

Began: 1994. Prizemoney: $312,500

Format: Women's singles, doubles

Drawcards: Kiki Bertens (22), Anastasija Sevastova (34), Monica Niculescu (38), Alison Riske (39), Misaki Doi (40), Alize Cornet (41), Jelena Jankovic (134)

Defending singles champion: Alize Cornet

SYDNEY INTERNATIONAL

Olympic Park, Sydney, January 8-14

Began: 1885. Prizemoney: $1.53 million

Format: Men's and women's singles and doubles

Drawcards: Angelique Kerber (1), Agnieszka Radwanska (3), Dominika Cibulkova (5), Karolina Pliskova (6), Caroline Wozniacki (19), Samantha Stosur (21), Daria Gavrilova (25); Dominic Thiem (8), Viktor Troicki (29)

Defending singles champions: Viktor Troicki, Svetlana Kuznetsova

FAST4 SHOWDOWN (AUS V WORLD)

Darling Harbour, Sydney, January 9

Began: 2015

Format: Exhibition men's singles and doubles

Drawcards: Nick Kyrgios (13), Bernard Tomic (25), Rafael Nadal (9), Kei Nishikori (5)

WORLD TENNIS CHALLENGE

Memorial Drive Tennis Centre, Adelaide, January 10-12

Began: 2009

Format: Exhibition men's singles and legends singles and doubles

Drawcards: Nick Kyrgios (13), Tomas Berdych (10), Bob and Mike Bryan, Mark Philippoussis (retired)

Defending champions: Goran Ivanisevic, Marin Cilic and Iva Majoli

KOOYONG CLASSIC

Melbourne, January 10-13

Began: 1988

Format: Men's and women's exhibition singles

Drawcards: Bernard Tomic (26), David Goffin (11); Sabine Lisicki (94), Sorana Cirstea (80)

Defending men's champion: David Goffin (no women's competition in 2016)

AUSTRALIAN OPEN

Melbourne Park, January 16-29

Began: 1905. Prizemoney: $50 million

Format: Men's singles and doubles, women's singles and doubles, mixed doubles

Drawcards: Andy Murray (1), Novak Djokovic (2), Milos Raonic (3), Stan Wawrinka (4), Kei Nishikori (5), Rafael Nadal (9), Nick Kyrgios (13), Roger Federer (16), Bernard Tomic (26); Angelique Kerber (1), Serena Williams (2), Agnieszka Radwanska (3), Simona Halep (4), Dominika Cibulkova (5), Garbine Muguruza (7), Samantha Stosur (21), Daria Gavrilova (25)

Defending champions: Novak Djokovic, Angelique Kerber