Victoria Pendleton, fresh from her ninth Track Cycling World Championships title, began her bid for a 10th by advancing at the second time of asking in the women's keirin on day four in Melbourne.
The 31-year-old is racing in her final World Championships as she plans to retire after the London Olympic Games and won her sixth sprint title on day three in dramatic and emotional circumstances.
Two riders progressed from each of the four keirin heats, with the remainder falling into the first-round repechage.
Pendleton finished third behind France's Clara Sanchez and Australia's Kaarle McCulloch before defeating Monique Sullivan of Canada and Russia's Viktoria Baranova in her repechage heat to go through at the second attempt.
Defending champion Anna Meares, beaten by Pendleton in an epic semi-final on Friday, needed no second invitation and advanced by winning the first heat.