Emma Raducanu joked her serve had "a mind of its own" after she battled her way to victory over 26th seed Ekaterina Alexandrova despite 15 double faults.
Nine of them came in the first five games and several at key moments, but the issue did not prevent Raducanu claiming her best win at the Australian Open, clinching a 7-6 (4) 7-6 (2) victory after two hours and 16 minutes.
