Ajla Tomljanovic has defeated Georgina Garcia Perez in the first round of the WTA's Silicon Valley Classic in San Jose.
The Australian world No.64 dispensed with her Spanish opponent 6-4 6-1 in just 71 minutes.
The 25-year-old didn't face a break point throughout the match with her solid serve proving too strong for Perez.
Tomljanovic will now meet American second seed and last year's US Open finalist Madison Keys, who received a bye in the first round.
The pair last met in the opening round of Wimbledon where Keys toppled Tomljanovic 6-4 6-2 in just over an hour.
Also on Monday, former world number one Victoria Azarenka outlasted Kateryna Bondarenko 6-3 6-7(7) 7-5 to set up a highly-anticipated second-round clash with top-seeded Garbine Muguruza.
Azarenka took the first set comfortably but faced stiffer resistance in the second from the Ukrainian, who battled hard against the 29-year-old Belarusian on a night when her powerful first serve lacked its usual accuracy.
Azarenka committed 12 double faults and was broken four times but did just enough to edge the defensive-minded Bondarenko, who sent a backhand long on match point to put an end to the marathon match.
Elsewhere, teenager Sofia Kenin defeated Paraguayan Veronica Cepede Royg 6-4 6-4 and American Danielle Collins fired three aces and won 76 per cent of her first service points to dispatch compatriot Danielle Lao 7-6(2) 6-3.
Greek Maria Sakkari cruised to a comfortable 6-2 6-2 win over American Christina McHale, who committed eight double faults and was broken five times.
Tuesday's action will see 23-times grand slam champion Serena Williams face off against Johanna Konta.