in 2003, pakistan came to england for the three match series. in 2004, india played the natwest challenge as a prelude to the icc champions trophy held in england that year. the following year, australia played these matches between the natwest series and the ashes. the icc began their trial of the "supersub", 12th man who could bat or bowl and "powerplay", flexible fielding restrictions in the 2005 matches. the supersub idea was jettisoned after a year whilst the powerplay experiment was retained.