For the second time in as many rounds, Bruce Kamau came up trumps for Melbourne City, scoring the winner in his side's 2-1 derby win over cross-town rivals Melbourne Victory.
Kamau settled a tense and tight A-League match by running the length of the field from a Victory corner to score in the 64th minute.
Marcin Budzinski and Leroy George earlier scored their first goals in Australia before Kamau's speed broke open the contest.
On the back of his round one double, Kamau is now on top of the A-League scorer's charts -- just as his side looks down on the league after two games.
In contrast, Victory find themselves on the bottom of the competition after two losses.
A fired-up Victory side were aggressive in the tackle, and had three first-half bookings to show for it.
Carl Valeri and Leigh Broxham were carded for reckless tackles in the opening 10 minutes, before Rhys Williams also saw yellow for a brutal late challenge from behind on Osama Malik.
Budzinski needed just five minutes to leave his mark.
He ran onto Nick Fitzgerald's delicate through ball and powered past Lawrence Thomas at the near post in the final act of the first half.
After the break, Victory responded through George.
Barbarouses' bending cross found the 30-year-old at the back post, who steadied and struck home through Eugene Galekovic's legs.
Victory were on top and looked likely to add to their tally before falling to a sucker punch. Kamau charged out of his own half with the ball and into the Victory box.
As he struck the ball the 22-year-old was almost stymied by Valeri but the Victory skipper's outstretched shin only looped the ball over Thomas into the goal.
City coach Warren Joyce said he wouldn't be getting carried away with the win.
"It's early season yet. It's a good performance tonight ... three points tonight but nothing more than three points," he said.
Victory, which fielded returning internationals Mark Milligan, James Troisi and Barbarouses in the starting side, must now regroup before a trip to unbeaten Adelaide United.
Kevin Muscat said he saw a similar game against City to their opening round loss to Sydney FC.
"We should've got something tonight. And we should have got something last week," he said. "We're capable of so much more."