which aussie batsman remained unbeaten on 99 at the end of test match?

Answer 1

S.R. Waugh of Australia remained Not Out on 99 in the 5th test of Ashes series between Australia and England played at W.A.C.A. Ground, Perth from 3rd to 7th February, 1995.

Please check the following link for score card of that match:

http://www.cricinfo.com/db/ARCHIVE/1994-95/ENG_IN_AUS/ENG_AUS_T5_03-07FEB1995.html

Answer 2

Adam Gilchirst i think