Adelaide United boss Carl Veart admits his side were not good enough as they slipped to a 4-1 defeat against Macarthur FC.
The Reds are pushing to finish in the top six of the A-League this season and had been in good form when winning three of the last five games.
However it all came undone against Macarthur on Saturday as they were given a lesson by Bulls playmaker Ulises Davila who ran the show.
The game started well for the Reds with Craig Goodwin putting them in front after 20 minutes with his 34th goal for the club, but that was as good as it got.
Apostolos Giannou equalised with his first goal for Macarthur just before half-time and then the Bulls ran riot after the break with Craig Noone, Al Hassan Toure and Michael Ruhs adding to the scoreline.
Veart did not hold back with his assessment after the final whistle and said the performance fell well below the standards they have set in recent weeks.
"We were just not good enough tonight," Veart told AAP. "From the first minute, even though we did take the lead, we were far, far, far away from where we needed to be.
"We'll have to pick ourselves up and have a good look at this performance, not just the players, the staff, everyone, because that's totally unacceptable that performance out there tonight."
The Reds now have a few days to lick their wounds and get ready to go again when they face Central Coast Mariners back in Adelaide on 26th February.