Ex-Ghana captain Stephen Appiah says it would not be easy to record a third-straight World Cup win over USA in Brazil this June.
The Black Stars hold the aces ahead of their Group G opener against the Yanks on 16 June in Natal.
Appiah scored the winner in Ghanaâ€™s 2-1 win over the Stars and Stripes in their 2006 finals Group stage match played in Nurnberg.
Four years later, he played a cameo to help eliminate them at the round 16 stage in South Africa.
Appiah has advised the current crop of players not to write off the Americans.
â€œIt is going to be difficult because beating them on two occasions it is never going to be easy,â€ Appiah said in a recent interview.
â€œBut here is the case they are playing us first and that will be difficult and definitely they are coming for revenge.â€
USA look rejuvenated under former Germany and Bayern Munich coach Jurgen Klinsmann and have vowed to avenge.