Tyrone Mears has revealed how Derby boss Billy Davies is constantly motivating him to prove people wrong.

Mears explained: "I want to show everyone I can play in the Premier League. Last season was frustrating and the gaffer keeps saying to me that West Ham didn't think I was good enough.

"He says that every day and reminds me they didn't think I could handle it and urges me to go and show them. He uses that technique with a lot of the players because Gary Teale has come from Wigan, Andy Todd and Jay McEveley from Blackburn, Stephen Pearson from Celtic."

Matt Oakley, who scored after five minutes, is the skipper and midfield driving force after leaving Southampton on a free transfer in 2006.

Oakley said: "The manager deliberately got players here who have a point to prove. Portsmouth are full of million-pound players but we gave them problems and feel comfortable against teams like these."