Angelique Kerber, 2016 WTA Finals runner-up, also enters the Top 8 on the Leaderboard at No.7 following a run to the final at Indian Wells, while Belinda Bencic improves to No.3 after reaching the semifinals.
Indian Wells doubles champions Elise Mertens and Aryna Sabalenka soar 25 spots on the doubles Leaderboard to No.5, as the Chan sisters rise to the No.1 position following their semifinal run.
The singles player who finishes the regular season in pole position on the Porsche Race to Shenzhen Leaderboard will be congratulated with a new Porsche.
Click here to read more on this week's Porsche Race to Shenzhen Leaderboard.