Defending champions Auckland City kicked off the O-League with a 2-0 win away to Mont Dore today while rivals Waitakere United were held at home by AS Dragon.
Auckland have won three of the four editions of the competition between Oceania's best club sides and they showed their experience with a professional display against the New Caledonia champions in Noumea.
But the first week of the revamped league was not so kind to Waitakere, who squandered several second half chances to draw 0-0 against Tahiti's top side at Whenuapai.
The city rivals have been drawn in the same group for the month-long competition - the first time it has been held in a condensed time period rather than spread throughout a season - and they will renew hostilities next weekend at Fred Taylor Park.
Waitakere edged an epic ASB Premiership final against Auckland earlier this month so, despite today's results, they will take confidence into the latest instalment of the Super City derby. With the top two sides from each group progressing to the semifinals, both teams can make the final of the competition, the winner of which qualifies for the Club Word Cup.