# Petra Kvitova
Petra Kvitova has had a contrasting season so far. In the first-half, she won more titles than any other player with 5 titles including 2 back-to-back clay titles. She started Wimbledon as one of the favorites but crashed out in the very first round. This was followed by a third-round exit at the US Open. Her best performance in the 2nd half of the season so far was a semi-final appearance in Cincinnati where she beat Serena Williams in a tough 3 set match. Considering that this is her first full season since the horrific knife attack on her, the Czech has had a good season with 5 titles and a top-10 finish and she will look to add a 6th WTA title in Singapore.
# Elina Svitolina
A consistent performer over the past two years, Ukranian Elina Svitolina has made giant strides in her tennis career. She had a mathematical chance of finishing 2017 as World Number 1 and has been ranked inside the Top-5 for the past two years in succession. Like Kvitova, she enjoyed a good first half before seeing a dip in form in the latter half of the season. All her 3 titles this year have come before July at Brisbane, Rome and Dubai. Her finals record since January 2017 has been an astounding 8-0 and the Ukranian will be looking to make an impact in her second outing here.