Angelique Kerber beat Madison Keys 6-2 , 4-6 , 7-5 in the Charleston final . The win was a huge boost for Williams who has been struggling with injuries and illness since winning Wimbledon last month. It is the German 's first WTA title since Linz in 2013 .
Angelique Kerber beat Madison Keys 6-2 , 4-6 , 7-5 in the Charleston final . Kerber battled back to win six of the last seven games in the decider . It is the German 's first WTA title since Linz in 2013 .