After dominating the opening minutes Adelaide United hit the lead in the 18th minute as Marcelo Carrusca was free down the right, beating his defender, which allowed him to cross for Bruce Djite who made no mistake.
It didn’t take long for Adelaide to threaten again and they nearly doubled their lead moments later as Tarek Elrich’s shot beat Vedran Janjetovic but was hacked off the line by Matthew Jurman.
But Adelaide’s dominance continued and in the 27th minute they had their second as a clearance was sent to Fabio Ferreira, putting him through one-on-one with Janjetovic, allowing him a simple finish.
That saw Adelaide United cruise their way in to the break with a 2-0 lead, with Sydney looking well out of the match.
Sydney had a better go of it in the second half, but they still never really looked in the contest as they struggled to put away the few chances that they had.
Adelaide weren’t done and in the 79th minute they wrapped things up as Sergio Cirio was played through, allowing him to square for Jeronimo, who simply tapped it home.
The fans duly let the board what they thought of Sydney’s performances and Frank Farina’s management with banners and a walk-out to protest the manager, with one fan getting carried away and hitting Farina with a drink from the crowd.
The loss leaves Sydney FC in sixth, still in the finals places but with Perth, Wellington and Newcastle all playing on Sunday and all within three points it seems unlikely to remain that way and the fans are getting frustrated.