Johannesburg: South Africa coach Corrie van Zyl has called for the Umpire Decision Referral System to be used in all Test cricket.
The system, which allows players to challenge umpires' decisions, will not be used during South Africa's upcoming three-Test series against top-ranked India.
Speaking ahead of the series, Van Zyl said on Monday "it would be fair and good for Test cricket" for it to be used "throughout."
He says "It's difficult to see a referral system used in one Test series and not in another."
UDRS is in use in the Ashes Tests between Australia and England but India chose not to have it in South Africa, with India's cricket board saying it is still not convinced by the system. Both teams must agree to it being used.