Where did you get 9 ODI centuries from? Ijaz Ahmed has only 1 ODI century against Australia, but 6 Test centuries. He always played well against Australia though, both in Pakistan and in Australia.
This is the thing i was thinking but i don't have access on Cricinfo else show the whole record ..... so he has total 7 centuries against Aussies .... how much average he has against Aussies ????