Melbourne Victory flyer Marco Rojas has put his scintillating form down to his tough time in Europe, saying it had matured him as a player and a person.

Photo: PHOTOSPORT

The 24-year-old New Zealander rejoined Victory this season after three difficult years at German club Stuttgart and he hit the ground running.

In Melbourne's stunning 6-1 win over Wellington, Rojas scored two goals in a performance fitting with his status of A-League player of the year in 2012-13.

Ahead of their Saturday clash with frontrunners Sydney FC, who haven't conceded a goal, Rojas says he has learned from the overseas experience.

"What I learnt over there - I've become a bit more direct and I'm using that stuff now in these games and I'm on a bit of a good run and, hopefully, that continues," he said.

"Going over to Europe, I had to come out of my shell a little bit.

"You're on your own and you have to do what you can to succeed so I had to change quickly."

Rojas also put his good form down to his blossoming combination with striker Besart Berisha, who nailed three goals in the Monday night thumping.

The duo combined for 103 touches, six shots and their five goals.

"He's always in the right place and, half the time, you don't even need to look - you know when you've got the ball on the wing where he's going to be and you can just play it across," Rojas said.

The All Whites winger said Victory had drawn plenty of confidence from their big win over the Phoenix after a stuttering start to the season.

Melbourne looked extra sharp when playmaker James Troisi came on for the final half-hour in his first match back since last month's collar-bone surgery.

Rojas said they would need to be firing to take down Sydney at Allianz Stadium.

"Sydney have been flying but we will take confidence from the last game that we will be able to do a good job.

"It's going to be a very tough game because they haven't conceded and have scored lots."

-AAP