Pompey were enjoying their first season back in the top-flight for 15 years.
But even the most optimistic of supporter could not have expected them to brush past struggling Leeds with such ease.
Dejan Stefanovic gave the Blues an early lead, only for the visitors to quickly hit back through Alan Smith.
Pompey ran riot after that, though, with Gary O'Neil bagging a brace and Hayden Foxe, Patrik Berger and Yakubu all getting in on the act.