Colourful Spaniard Josep Gombau was appointed coach of Adelaide United and quickly signed countrymen and Barcelona youth products Sergio Cirio and Isaías Sánchez.
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There was a change at Wellington too, with Ernie Merrick taking the reins at the Phoenix.
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Tomi Juric moved from Adelaide to Western Sydney and his eight goals helped the Wanderers to their second consecutive Grand Final.
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Caltex Socceroos attacker James Troisi was loaned to Melbourne Victory on a one-year deal from Italian club Atalanta. He scored 12 goals in his first Hyundai A-League season.
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In late October, Ange Postecoglou was appointed as Caltex Socceroos head coach on a five-year contract, with Kevin Muscat taking over the reins at Melbourne Victory.
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Five games into the new season, Graham Arnold left the Central Coast Mariners to take up a coaching role at Japanese club Vegalta Sendai, with Phil Moss taking over and guiding the Mariners to a third-place finish.
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William Gallas became the first Frenchman to play in the Hyundai A-League, making his debut as a substitute for Perth in round six against Adelaide United.
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With Glory sitting seventh after ten rounds, coach Alistair Edwards was sacked after reportedly falling out with senior players and owner Tony Sage. Kenny Lowe took over, but Glory were unable to make the finals, finishing eighth.
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Melbourne Heart were bottom of the table for much of the first half of the season and after a 1-0 loss at home to Wellington just after Christmas, John Aloisi was sacked as coach with Dutch legend John van't Schip taking over.
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Victory suffered back-to-back 5-0 defeats in January. First, Wellington put five past them in Wellington...
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.... before Sydney FC inflicted the same scoreline eight days later at Etihad Stadium.
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The Jets dropped out of the top six after a round 15 loss to Melbourne Heart, following which coach Gary van Egmond's contract was terminated by mutual consent with Clayton Zane taking over for the rest of the season. Newcastle eventually finished seventh, two points outside the top six.
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Adelaide United's Sergio Cirio scored his first Hyundai A-League hat-trick in round 20 against Victory, but was still on the wrong end of a 4-3 loss.
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Towering Dutchman Orlando Engelaar supplied the goal of the season, finding the net from inside his own half in the round 24 clash with the Mariners at AAMI Park.
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Newcastle's Adam Taggart was the competition's deadliest marksman, scoring 16 goals to win both the Golden Boot and NAB Young footballer of the year, earning a move to English side Fulham.
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In the finals series, Victory hosted Sydney FC in a Big Blue Elimination Final with Gui Finkler's injury time winner sending the home side through to the semi-finals, where they were beaten 1-0 by Brisbane Roar.
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Western Sydney beat the Mariners in the other semi-final and took the lead against Brisbane in the Grand Final when Matthew Spiranovic headed Shinji Ono's corner past Mike Theo.
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With time running out, Roar again proved they can never be written off, with Besart Berisha - in his last game for the Roar - meeting a sublime Thomas Broich cross to head home the equaliser and send the match into extra-time.
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The match was settled three minutes into the second half of extra time when substitute Henrique gleefully blasted home the winner to hand Brisbane their third A-League Championship in four seasons.