Great Britain's women continued their domination of the Track World Cup with golds for Joanna Rowsell and Lizzie Armitstead on day one in Melbourne.
Rowsell took the lead in the overall women's pursuit competition, beating Aussie Josephine Tomic by a second.
Then Armitstead, who won three golds in Manchester three weeks ago, added a fourth in the Melbourne scratch race.
A young squad is competing in Melbourne as Great Britain's Olympic medallists from Beijing decided to miss the event.
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In the absence of Olympic silver medallist Wendy Houvenaghel, who won the Manchester round, world team pursuit champ Rowsell was fastest in individual pursuit qualifying.
And the Londoner then beat Australian favourite Tomic in the final in three minutes 41.183 seconds.
"It's been quite a big jump to be doing the [individual] pursuit," said Rowsell.
"I'm really pleased to have won here and I'm looking forward to the team pursuit on Saturday."
Armitstead, from Otley in Yorkshire, was a key support rider for winner Nicole Cooke in the Olympic road race.
She transferred to the track in Manchester to win the points race, scratch race and team pursuit and further bolstered her bunch race credentials in Melbourne.
Katie Colclough, the third member of the GB team, finished 23rd in the scratch race.
Australian riders dominated much of the rest of the first day's programme.
The three-day Melbourne competition is the second of five Track World Cup events this season, with the events in Columbia, Beijing and Copenhagen before the World Championships in Pruszkow, Poland in March.
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