Belgian test for Williams

If all goes according to plan for Williams she could face Caroline Wozniacki, whom she beat in the final of the 2014 US Open, in the quarter-finals and defending Wimbledon champion Petra Kvitova in the semi-finals.

In the bottom half of the draw, second seed Maria Sharapova will face a qualifier first up, with Eugenie Bouchard and Ana Ivanovic possible quarter-final and semi-final opponents respectively.

Third seed Simona Halep will have to negotiate her was passed Italian Karin Knapp in what could prove a tricky test for the Romanian.

Victoria Azarenka and Sloane Stephens will do battle in what is perhaps the tie of the opening round. The pair met in a controversial semi-final in 2013 where Azarenka's lengthy injury timeout saw her come in for heavy criticism from the Melbourne faithful.