Tomic has pulled out of qualifying but it is understood he still hopes to contest the New York major for the 10th straight year.

A one-time junior champion at Flushing Meadows, Tomic narrowly missed direct entry after slipping out of the world's top 100 following a first-round Wimbledon loss to Jo-Wilfried Tsonga.

The 26-year-old is the third alternate and could still take a place in the 128-strong men's singles draw if there are more withdrawals after the overnight scratching of 2009 champion Juan Martin del Potro.

Kokkinakis has tumbled to No.212 in the world after yet another injury-plagued season but hopes to kickstart a career revival in New York.

"It's been a difficult six months," he admitted.

"After starting the year well in Brisbane and at the Australian Open, it was frustrating to have to take some time out.

"But my body is finally feeling good, I'm wrapped to be back playing and I'm really excited for the opportunity."

The 23-year-old former Davis Cup star - who beat Roger Federer last year - joins fellow Australians Nick Kyrgios, Alex de Minaur, Jordan Thompson, 2018 quarter-finalist John Millman and teenage gun Alexei Popyrin in the men's event starting on August 26.

Tomic's fellow Gold Coaster and former women's champion Samantha Stosur will contest her 15th US Open after also being handed a wildcard.

A stunning winner over Serena Williams in the 2011, Stosur joins world No.2 Ashleigh Barty, Ajla Tomljanovic, Daria Gavrilova and Astra Sharma as one of five Australians in the women's singles in New York.

At 35, Stosur, who has slipped to No.131 in the world rankings but remains a 2019 Fed Cup final option for Australia, will be the third-oldest player in the draw behind 37-year-old Serena and the American's sister Venus, who turns 40 next year.

"I guess I have always felt a little confidence boost here since I won," Stosur said.

"Coming here each year since 2011 always feels that extra bit special. Hopefully I can draw on that and play well and enjoy another good result here."

Stosur's wildcard gives Australia 10 players in the women's and men's singles main draws.

Another 15 Australians have entered US Open qualifying - seven men and eight women.

AUSTRALIANS AT THE US OPEN (PREFIX DENOTES RANKING):

Women in main draw

2-Ashleigh Barty

46-Ajla Tomljanovic

83-Daria Gavrilova

99-Astra Sharma

131-Samantha Stosur

Women in qualifying

137-Priscilla Hon

162-Ellen Perez

169-Zoe Hives

188-Destanee Aiava

193-Lizette Cabrera

206-Maddison Inglis

231-Kaylah McPhee

236-Arina Rodionova

Men in main draw

27-Nick Kyrgios

38-Alex de Minaur

49-Jordan Thompson

61-John Millman

96-Alexei Popyrin

212-Thanasi Kokkinakis

Men in qualifying

99-Matt Ebden

131-James Duckworth

134-Alex Bolt

166-Marc Polmans

183-Jason Kubler

197-Andrew Harris

234-Akira Santillan.

Australian Associated Press