Manager Darren Ferguson believes Peterborough are about to return to their best form.
Ferguson was frustrated by the postponement of Saturday's sell-out clash against Championship leaders West Ham at London Road after being encouraged by his side's performance in the previous fixture at Burnley.
Posh have yet to win in 2012 but ahead of the trip to promotion contenders Cardiff on Tuesday night, Ferguson said: "I wanted to play on Saturday. It was going to be a massive occasion for the the whole club, but I also fancied us to get a result.
"There were signs at Burnley the week before, particularly during the first half, that we were coming back to our best and I fancied us to carry that form into the West Ham match.
"We will be up against it down there in Cardiff, for sure. They are an excellent side but we proved earlier this season that we can beat them so we can take confidence from that. We will be very positive down there."