Cape Town - Argentina's Federico Anselmi will take charge of the Bulls v Kings South African Super Rugby derby at Loftus Versfeld on Saturday.
Kick-off is at 17:15.
Anselmi will be assisted by Marius van der Westhuizen and Rasta Rasivhenge who will man the touchlines, while Johan Greeff is on TMO duty.
Quinton Immelman will handle affairs in the Stormers v Sunwolves clash at Newlands later on Saturday.
Kick-off is at 19:30.
Immelman will have Shuhei Kubo and AJ Jacobs as his assistant referees, with Shaun Veldsman in the TMO booth.
Click for the full list of Round 16 (SA and Australian Conferences) referee appointments