From 24 March to 5 April 2015
Miami
Miami / WTA Premier / 5,381,235 $
Williams S
From 6 April to 12 April 2015
Charleston
Charleston / WTA Premier / 710,000 $
Kerber A
Katowice
Katowice / WTA International / 250,000 $
Schmiedlova A
From 13 April to 19 April 2015
Bogota
Bogota / WTA International / 250,000 $
Pereira T
From 20 April to 26 April 2015
Stuttgart
Stuttgart / WTA Premier / 710,000 €
Kerber A
From 27 April to 2 May 2015
Prague
Prague / WTA International / 250,000 $
Pliskova K
Marrakech
Marrakech / WTA International / 250,000 $
Svitolina E
Madrid 
Madrid 
05:14 
vs 
vs 
Titles 2015