Auckland FC has used its underdog tag as motivation to pound Adelaide United 3-nil and make the A-League grand final. 

The tie was deadlocked heading into the return leg across the Tasman, but Black Knights coach Steve Corica says his team was fired up by critics saying they couldn't win.  

Auckland FC won the two-leg tie 4-1 on aggregate and will now meet the Newcastle Jets or Sydney FC in the grand final – a first-ever for a New Zealand men's club. 

Striker Sam Cosgrove found the back of the net with a penalty, and told Piney in terms of a satisfying performance, it was right up there. 

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