The move is seen as part of Ukraine's efforts to reinforce its army as soldiers struggle to hold positions against Russia
Du Plessis will sit out the final match of the series starting in Johannesburg on Friday after match referee David Boon imposed the suspension having found South Africa to be one over short of their required number in the test.
It is the second time in 12 months that Du Plessis and his side have been found guilty of a slow over rate after a test against India in Johannesburg that ended on Jan. 17. The rest of the side have also been fined 10 percent of their match fee.
"In accordance with Article 2.22.1 of the ICC Code of Conduct for Players and Players Support Personnel... players are fined 10 per cent of their match fees for every over their side fails to bowl in the allotted time, with the captain fined double that amount," the International Cricket Council said in a statement on Sunday.
South Africa have an unassailable 2-0 lead in the three matches series, but could field a much-changed batting line-up in the third test with the absence of Du Plessis, and injury concerns over opener Aiden Markram and number three Hashim Amla.
The move is seen as part of Ukraine's efforts to reinforce its army as soldiers struggle to hold positions against Russia
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