Simon Katich was ruled out after suffering a groin strain in training Thursday and the selectors announced that Jaques, who made his Australian debut against the Proteas in the Boxing Day Test, would be his replacement.

Dorey will replace Nathan Bracken, who is being rested.

Test discard Damien Martyn will open the batting with Jaques while regular one-day opener Adam Gilchrist also takes a break.

Both sides have one win each so far in the tri-series and will be playing each other for the second time. South Africa won the first clash by five wickets.

South Africa have their own injury problems with all-rounder Jacques Kallis on his way home for treatment on his elbow, joining pace bowlers Andre Nel and Makhaya Ntini.

Inexperienced all-rounder Johan van der Wath has been called from South Africa to replace Kallis while Nel has been replaced by paceman Dale Steyn.

But there was some good news for the South Africans with fast bowler Charl Langeveldt -- who has a groin strain -- able to bowl in the nets on Thursday. He now has a chance of playing in Friday's match.