Brisbane will have to wait to celebrate its 100th A-League win after gifting the Newcastle Jets a 2-0 victory including an own-goal at Lang Park on Friday night.
In the 33rd minute, Roar defender James Donachie raked an Andrew Hoole cross into his own net as much of the 14,848-strong crowd groaned.
Brisbane wasted numerous chances, with Jets substitute Joey Gibbs sealing the result in the 88th minute.
While still clear competition leaders, the Roar remain on 99 A-League wins, aiming to become the first club to reach 100.
Newcastle prevailed 2-1 against the Roar when the two sides met on November 17 – the last time Brisbane lost a game this season.
Newcastle has won four of its past five matches against Brisbane.
The Roar had more than 60 per cent of the possession in the game, Ivan Franjic having the first real chance early in the match, but he became tangled with the last defender.
Seconds later, Albanian star Besart Berisha put his body on the line, colliding with Jets goalkeeper Mark Birighitti in his bid to head a cross into goal.
Liam Miller missed the best chance of the first half, spraying a superb Franjic cross across the goal mouth.
Sixteen minutes in, Berisha had another header opportunity but could not control it, Franjic mirroring his efforts to nudge another cross into Birighitti’s hands.
Newcastle went on some searching runs, the first genuine opportunity coming off a 27th-minute corner, but the Roar’s defence, which had let in just seven goals this season, held firm.
But it all came undone in the 34th minute when Donachie found his own net to hand Newcastle a 1-0 lead.
The frustration spilled into the second half as Brisbane squandered chance after chance to draw level.
Not even Henrique’s injection in the 70th minute could spark the Roar, with the Brazilian missing two attempts within 10 minutes.
Brisbane went into the game without teenage tyro Kwame Yeboah who is in Europe to seal a three-and-a-half year deal with German club Borussia Monchengladbach.
The 19-year-old had scored two scorching goals in three appearances for the Roar this season.
Roar coach Mike Mulvey opted not to rush experienced defender Jade North (groin) back from injury.
Newcastle was again without in-form attacker Nathan Brown and marquee player Emile Heskey through injury.
Jet Samuel Gallaway received a yellow card 21 minutes in for repeat infringements after pushing Franjic to the ground, while Roar captain Matt Smith earned a yellow for his spray after giving away a free kick.