Pakistan skipper Shahid Afridi has won the toss and elected to bat first against England as the visitors look to stop Englands 6 game winning streak in the shortest form of the game.
Despite heavy afternoon rain the game is expected to get under way on time. After a dry sunny day in Cardiff the rain clouds moved in across the city and with just an hour to go before the start of the game the heavens opened.
After their victory on Sunday; England has named an unchanged side which means James Anderson will once again watch on from the sidelines.
Pakistan meanwhile have made one change which see's Mohammad Hafeez come in to replace medium pace bowler Wahab Riaz.
England team - Craig Kieswetter, Steve Davies (wk), Ravi Bopara, Paul Collingwood, Eoin Morgan, Luke Wright, Tim Bresnan, Michael Yardy, Graeme Swann, Stuart Broad, Ryan Sidebottom.
Pakistan team - Shahzaib Hasan, Kamran Akmal (wk), Mohammad Hafeez, Fawad Alam, Mohammad Yousuf, Umar Akmal, Shahid Afridi (capt), Abdul Razzaq, Umar Gul, Saeed Ajmal, Shoaib Akhtar.