This was introduced by the ICC in 2005 to try to spruce up the middle overs of one-day internationals by enforcing the bowling side to take three blocks of overs in which they have to have extra fielders within the 30-yard circle. The first Powerplay is mandatory through the first ten overs of the innings, the second and third ones, of five overs each, can be taken at any other time. In rain-reduced matches the duration of the second and third Powerplays is reduced in proportion to the overall reduction.