Australians Zoe Hives, Ellen Perez and Akira Santillan have booked their places in the second round of qualifying for next week's US Open.
Hives, who reached the second round of this year's Australian Open after claiming the notable scalp of American tour veteran Bethanie Mattek-Sands, came through 6-4 4-6 6-2 against sixth-seeded Swiss Stefanie Vogele on Tuesday.
The 22-year-old right-hander Hives will face face Caroline Dolehide, who progressed when compatriot Shelby Rogers retired early in the second set of their all-American clash.
Later in the day, Perez became the seventh Australian women to advance to the last 64 of qualifying with a clinical 6-3 6-3 victory over Swiss Conny Perrin.
World No.164 Perez will face a tougher ask in her match when she meets Romanian Ana Bogdan - a former world No.59 who has won matches in the maind raw at all four grand slams.
Kaylah McPhee fell to American Nicole Gibbs 6-2 3-6 6-1.
In the men's draw, Japanese-born Santillan took just an hour to dispatch Serb Pedja Krstin 6-1 6-4 to progress to a showdown with Mario Vilella Martinez.
Santillan was the only Aussie male to advance from the first round after 25th seed James Duckworth and John-Patrick Smith both lost on Tuesday.
Duckworth was defeated 6-3 5-7 6-3 by Argentine world No.205 Marco Trungelliti while Smith bowed out 7-6 (7-5) 6-4 to Croatian Viktor Galovic.
Over the course of five days, 128 men and 128 women compete for 16 spots in each US Open main draw with a first-round appearance in the year's final grand slam worth a guaranteed $US58,000 ($A86,000).