Britain's Peter Kennaugh won the opening stage of the Herald Sun Tour in Australia, leading home Chris Froome in a Team Sky one-two.
The pair attacked on the category-one climb to Toolangi and then held off a chasing pack of 29 riders to win by 17 seconds at the finish in Healesville.
The win gave the Isle of Man rider a seven-second advantage over Froome.
It was the 26-year-old's second victory in five days after he won the Cadel Evans Great Ocean Road Race on Sunday.
The Manx racer and current British champion said: "The race last week gave us quite a bit of confidence going into today.
"We had a plan for today's stage which worked out absolutely perfectly.
"Massive thanks to the team and especially to Froomey because once I got across to him I pretty much just sat on his wheel the whole way up the climb, then once I got over I was able to do some good turns and take it to the finish with him," Kennaugh said.
Two-time Tour de France champion Froome said he was happy to play the role of "key lieutenant" for team-mate Kennaugh.
"It's a really nice feeling being able to give something back to Peter," he added.
"The number of times he's emptied himself for me out on the road - and he's been part of both my Tour de France victories - so it's nice to be able to do something for him.
"We're going to try and protect that [lead] now."
The five-day event finishes at Arthurs Seat, Victoria on Sunday.