The Top 4 players on the Road To Singapore leaderboard - Maria Sharapova, Simona Halep, Serena Williams and Agnieszka Radwanska - all have a chance to qualify for the BNP Paribas WTA Finals Singapore presented by SC Global depending on how they do at the US Open.
How Sharapova or Halep can qualify for the WTA Finals:
Sharapova and Halep, the No.1 and No.2 players on the Road To Singapore leaderboard, will qualify if they make the semifinals of the US Open. Since they're seeded to play each other in the quarterfinals, only one of them will make it that far - so there could be a blockbuster quarterfinal clash coming...
How Williams can qualify for the WTA Finals:
Williams will qualify if she reaches the final of the US Open.
How Radwanska can qualify for the WTA Finals:
Radwanska will qualify if she wins the US Open.