Complex sentence: Australia then defeated Pontpool 21-18 in their final provincial match prior to the tour-closing match against the Barbarians, which featured what Campese regards as one of the four greatest performances playing for the Wallabies.
Split into simpler sentences: Australia then defeated Pontpool 21-18 in their final provincial match prior to the tour-closing match against the Barbarians. The match against the Barbarians featured what Campese regards as one of his four greatest performances playing for the Wallabies.