Wales will hope that powerful bench strength can play its part in the quest for a rare win against Australia on Saturday.
Head coach Warren Gatland has almost 180 caps of experience among his replacements for the Principality Stadium encounter.
The group includes British and Irish Lions backs Dan Biggar and Liam Williams, plus two forwards - Cory Hill and Ellis Jenkins - who captained Wales on tour against South Africa and Argentina this summer.
Wales' run of 13 successive defeats against Australia has included six losses by five points or less, while the Wallabies replacements have often had a big say in the final outcome.
The latest meeting is a final game between the countries before they clash in the World Cup next September.