Spit and polish: Faf du Plessis insists he did nothing wrong

Should cricket ease the regulations around ball-tampering, or should cricketers ease up on the illicit, but implicitly accepted practice? After everything that has happened in Hobart - where skipper Faf du Plessis used sugary saliva on the ball during the second test - and Adelaide - where he was punished for doing so - the fuss boils down to exactly that.