From 1 January to 7 January 2018
Brisbane
Brisbane / WTA Premier / 1,000,000 $
Svitolina E
Shenzhen
Shenzhen / WTA International / 750,000 $
Halep S
Auckland
Auckland / WTA International / 250,000 $
Goerges J
From 7 January to 13 January 2018
Sydney
Sydney / WTA Premier / 799,000 $
Kerber A
Hobart
Hobart / WTA International / 250,000 $
Mertens E
From 15 January to 27 January 2018
From 29 January to 4 February 2018
Taiwan
Taipei / WTA International / 250,000 $
Babos T
From 31 December to 6 January 2018
Brisbane
Brisbane / WTA Premier / 1,000,000 $
Madrid 
Madrid 
12:41 
vs 
vs 
Wozniacki C
Kvitova P
Titles 2018