Wales v Australia: Wallabies welcome back David Pocock to make Wales' task even tougher While he has continued to contribute off the field, this tour has been one of frustration for him. However, we were not prepared to take any risks and potentially compromise either the player or the team, in terms of his fitness. The upside to the wait is that his return comes at a time where we need fresh energy. That was evident at times during our Test in Italy last Saturday. Pocock's inclusion is one of three alterations from the side that won 22-19 in Florence. Lock Kane Douglas returns from a knee injury to take over from the suspended Sitaleki Timani, while Tatafu Polota-Nau replaces Stephen Moore at hooker. The Australian bench includes the tour's newest arrival, NSW Waratahs halfback Brendan McKibbin, who arrived from Sydney on Tuesday. Still eligible for Scotland, having been born in Glasgow, McKibbin would become the squad's fifth halfback of 2012, the 42nd player to be used by the Wallabies in 15 Test matches this year and the 14th new cap among that number, should he play. For Wales it has been another desperate week with lock Bradley Davies and prop Aaron Jarvis ruled out through injury and prop Paul James unavailable after returning to Bath in preparation for the Aviva Premiership game at Exeter. James Hook is also back on club duty - with Perpignan - while Alun Wynn Jones, George North, Adam Jones, Richard Hibbard and Danny Lydiate are among the long-term injured. Ian Evans returns in the second row, Scott Andrews starts for the ­second time in Wales jersey, on the tight head, and Aaron Shingler takes over from Ryan Jones on the blindside flank. Gethin Jenkins, who has been out of favour since joining Toulon from Cardiff Blues in the summer, takes over from James on the loose head. The only real positive for Gatland, whose side will slip out of the top eight in the world rankings, should they suffer a seventh straight Test match defeat, is that his back line remains in tact from the All Blacks" game. On the bench, uncapped Scarlets prop Samson Lee has the potential to make his international debut after joining the training squad on a full-time basis this week. Lee, 20 on Friday, misses out on the chance to make his debut as a teenager, but still has the opportunity of a belated birthday present should he appear from the bench. "We have played Australia regularly over the last couple of years and have come close to winning on a number of occasions, but have not quite been able to get ourselves over the chalk of the finish line," said Gatland. The Millennium Stadium crowd will be in full voice again, they were outstanding last week, and we are aiming to reach the end of a tough series on Saturday and finish off on a high. Replacements: S Moore (Brumbies), J Slipper (Reds), S Kepu (Waratahs), D Dennis (Waratahs), M Hooper (Waratahs), B McKibbin (Waratahs), M Harris (Reds), D Ioane (Reds).