Rugby: Bledisloe referee subs out

South African Mark Lawrence has been replaced by compatriot Craig Joubert as referee for Saturday's Tri-Nations rugby test between the All Blacks and Wallabies in Auckland.

The International Rugby Board announced that Lawrence had withdrawn for personal reasons.

Marius Jonker will fill the touch judge role previously occupied by Joubert, while New Zealander Vinny Munro is now the Television Match Official.

Joubert was referee when Australia beat the All Blacks 34-19 in Sydney last year.