Sydney FC midfielder Milos Dimitrijevic has urged his team to be more ruthless in front of goal when they meet Perth on Saturday.
The Sky Blues suffered their first loss of the A-League season when they conceded four goals to defending champions Melbourne Victory in a 4-2 loss in last week's grand final rematch.
However Dimitrijevic said a leaky defence wasn't to blame.
"You have to score when you have a few chances. This is the most important," Dimitrijevic said on Wednesday.