Australia ball-tampering: Faf du Plessis says Steve Smith must be going through tough time

South Africa captain Faf du Plessis says Australia committed a more serious offence in the third Test than he did two years ago when he was caught sucking on mints before using his saliva to shine the ball.

READ MORE: Ball-tampering row - Australia captain Steve Smith banned for one Test and fined

WATCH MORE: Bancroft and Smith admit ball-tampering plan

BBC Sport