Australia drops Dukes ball from Sheffield Shield with Ashes secured

Kookaburras to be used exclusively this summerDukes had been used to help prepare for 2019 Ashes Cricket Australia has dropped the British-made Dukes ball from its 2020-21 Sheffield Shield season and will use only the Kookaburra to encourage more spin bowling on home pitches.The Dukes were introduced to the Sheffield Shield in 2016-17 to help prepare Australia’s batsmen for the ball used on English pitches in the leadup to the 2019 Ashes. Related: 'Our hero': West Indies legend Sir Everton