Sydney FC already look down on their A-League rivals but in-form midfielder Brandon O'Neill has warned the competition the Sky Blues are just warming up.
Graham Arnold's side found a late winner in the Sydney derby that put them on top of the league after three rounds.
While Tony Popovic lamented the result which he saw as undeserved, O'Neill put a positive spin on the tough win.
The 21-year-old suggested if they could find a way to win while in second gear, their best efforts would outdo anyone.
"We've got so much room for improvement, it's incredible," he said.
"We know deep down that we can play a lot better than what we did last night.
"You look at our team, and we've only played three games together as a team this season ... if we can string results together and improve in performance the sky is the limit for us."
O'Neill has begun the season in sensational form and provided the pass for Milos Ninkovic to win the match.
Popovic rued the result when he saw the Wanderers as "clearly the better side, not probably better but clearly better".
"Its tough. The players are quiet now but on the other hand they know we are building something here," he said.
"They see it, they feel it in their performances. We're getting better, day-by-day, week-by-week. Every game we've improved and to play that well in a derby away from home against a very stable team, that's a real positive."
Melbourne City earned their first win of the season in an entertaining Sunday afternoon clash, beating Central Coast 3-1.
A Bruno Fornaroli second-half double lengthened City's unbeaten run at AAMI Park to 11 matches but beaten coach Tony Walmsley vowed not to be too disheartened with the result, saying they would continue with their attacking style.
"We take certain risks playing that style and there will be times when it doesn't work out," he said.
"I feel entertained but it didn't go our way and we move on to the next one."
On Friday night, a David Carney-inspired Newcastle Jets inflicted the biggest shock of the season, beating champions Melbourne Victory 1-0 at Hunter Stadium.
The Jets maintained their six-year unbeaten streak at home against Kevin Muscat's side with Carney scoring the only goal of the game in the 75th minute.
The former Socceroo lashed home an unstoppable shot from outside the box for young coach Scott Miller's first home win.
Wellington join the Jets and Brisbane with two wins after defeating the Roar by the odd goal in five on Saturday.