Wiaan Mulder hails de Villiers, Kohli, Bumrah as rare all-format greats

South African all-rounder Wiaan Mulder said modern cricket's physical and technical demands make excelling across formats hard, calling AB de Villiers, Virat Kohli and Jasprit Bumrah rare. In a TimesofIndia.com chat, he discussed T20's evolution, Impact Player rule doubts, US cricket growth and SA20's role in Proteas' success.