Adelaide United coach Carl Veart says his side paid the price for failing to take their chances during a 2-1 defeat against Sydney FC on Friday night.
The Reds have the top six of the A-League in their sights this season but ended up dropping crucial points on home soil against the Sky Blues.
Sydney took the lead after just 10 minutes through Elvis Kamsoba but Adelaide got back on level terms when Stefan Mauk fired home from close range in the 32nd minute.
The Reds then had more chances to go in front but could not take them. Sydney goalkeeper Thomas Heward-Belle first denied Lachlan Brook by tipping his shot on to the post and then snuffed out a close-range effort from Craig Goodwin.
Adelaide were then made to pay when Bobo scored what turned out to be the winner in the 73rd minute but there was still time for more drama.
They had the chance to equalise from the penalty spot in the 88th minute when Mohamed Toure was brought down in the area but Heward-Belle was again the hero when saving Hiroshi Ibusuki's effort.
Veart admitted his side were not at their best but still had enough chances to take something from the game.
"I thought we were a bit sloppy at times in the game and didn't make the most of our opportunities," he said. "Their keeper played very well and made some great saves. We were just a bit sloppy in crucial parts of the game."
In an amazing climax Adelaide then had more claims for a second penalty rejected when referee Adam Kersey was called over by VAR but decided there was no foul on Ibusuki.
"In my opinion it was a penalty but I don't give the penalties, the referee does. He saw it differently," Veart added. "I don't know how he saw it different, the VAR obviously thought there was something there.
"I don't know. You have to ask him why he didn't think it was a pen."