Forced to qualify for the Adelaide International 2, French Open semi-finalist Amanda Anisimova is now into the second round after dispatching Liudmila Samsonova.
The American, a quarter-finalist at Wimbledon last year and former French Open semi-finalist, benefited from Samsonova's service wobbles in a 7-5 6-3 win on Tuesday.
The world No.29 lost in the first round of last week's Adelaide International 1 and, due to the high-quality field, only earned her spot in the second instalment through qualifying.
She battled through that but had few problems on Tuesday, helped by her opponent making just 52 per cent of her first serves and conceding seven double faults.
Anisimova will next face Brazil's much-improved world No.15 Beatriz Haddad Maia.
In other matches, Zheng Qinwen stormed home to beat Shelby Rogers 4-6 6-4 6-0 to book a date with Petra Kvitova while Barbora Krejcikova ousted Alison Riske-Amritraj 6-2 7-6 (7-3).
Anna Kalinskaya upset French Open champion and world No.18 Jelena Ostapenko 6-3 6-4 and Katerina Siniakova was leading 6-1 1-0 when Anastasia Potapova retired.
Australian Storm Hunter will meet Estonian Kaia Kanepi later on Tuesday.