He appealed the charge , but it was rejected .
Immediately prior to this series , du Plessis was found guilty of ball tampering during the second Test against Australia that took place in November 2016 .
du Plessis appealed the charge , but it was rejected .
Immediately prior to this series , du Plessis was found guilty of ball tampering during the second Test against Australia that took place in November 2016 .