Canberra Olympic reckon they know a way to beat A-League giants Sydney FC for a spot in the FFA Cup decider.
"The best chance we've got is if they turn up to the wrong ground or on the wrong night," laughed coach Frank Cachia.
"Maybe we can do something on Facebook that says we're playing on a Wednesday and we turn up on a Tuesday."
Olympic booked a semi-final date next month with the Sky Blues in the nation's capital with a last-gasp 1-0 win over Victorian outfit Green Gully at Deakin Stadium on Tuesday night.
Captain and veteran goalkeeper Angelo Konstantinou struck a penalty in the 95th minute to send the reigning local champions into the final four - the first ACT team to do so.
And they did it with only 10 men, after Adam Rogic - brother of Socceroos and Celtic midfielder Tom Rogic - was sent off for two yellow cards on the hour mark.
Canberra, celebrating their 60th year, are the last of the grassroots clubs in the competition, with Melbourne Victory to play Melbourne City in the other semi-final.
Their clash with Sydney will be their first against an A-League side.
"There's absolutely no way that Graham Arnold is going to be fearing Canberra Olympic," admitted Cachia.
"He knows that he's got quality and he'll have an extra four weeks of preparation and the A-League kicking off.
"We're playing an A-League side when they're at their peak pretty much but regardless, we're going to give a good account of ourselves.
"These guys have already fulfilled so many dreams for the club and for the region."
Konstantinou said he had no fear playing a club like Sydney FC.
The 37-year-old, who runs a chain of gyms in the ACT by day, has just returned from representing Australia at the FIFA Futsal World Cup in Colombia.
"I get the same feeling when playing for Australia - we're always facing big teams," he said.
"On the night, anybody can win. What's to say they're better?
"They're big games, but we've got the Canberra conditions, they have to travel, and we've got a really good team which is gelling together."