NEW YORK, NY, USA - World No.1 Simona Halep is the top seed for this year's US Open - with former champion Serena Williams seeded 17th on her return to Flushing Meadows following her maternity leave.

Defending champion Sloane Stephens sits at No.3, while Wimbledon champion Angelique Kerber is one behind her at No.4 and Australian Open champion Caroline Wozniacki rounds out the Top 4 at No.2.

Learn more: US Open 2018: When is the final? What is the prize money?

Other notable seeded players include 2006 champion Maria Sharapova, at No.22, and Venus Williams - who won back-to-back titles here in 2000 and 2001 - is one spot ahead of younger sister Serena as the No.16 seed.

US Open qualifying is currently underway, with main draw matches set to start on August 27.

Check out the full list of US Open seeds below.

2018 US Open seeds:
1.  Simona Halep, Romania
2.  Caroline Wozniacki, Denmark
3.  Sloane Stephens, United States
4.  Angelique Kerber, Germany
5.  Petra Kvitova, Czech Republic
6.  Caroline Garcia, France
7.  Elina Svitolina, Ukraine
8.  Karolina Pliskova, Czech Republic
9.  Julia Goerges, Germany
10.  Jelena Ostapenko, Latvia
11.  Daria Kasatkina, Russia
12.  Garbiñe Muguruza, Spain
13.  Kiki Bertens, Netherlands
14.  Madison Keys, United States
15.  Elise Mertens, Belgium
16.  Venus Williams, United States
17.  Serena Williams, United States
18.  Ashleigh Barty, Australia
19.  Anastasija Sevastova, Latvia
20.  Naomi Osaka, Japan
21.  Mihaela Buzarnescu, Romania
22.  Maria Sharapova, Russia
23.  Barbora Strycova, Czech Republic
24.  CoCo Vandeweghe, United States
25.  Daria Gavrilova, Australia
26.  Aryna Sabalenka, Belarus
27.  Anastasia Pavlyuchenkova, Russia
28.  Anett Kontaveit, Estonia
29.  Dominika Cibulkova, Slovakia
30.  Carla Suarez Navarro, Spain
31.  Magdalena Rybarikova, Slovakia
32.  Maria Sakkari, Greece