Australian U20s and Waratahs lock Ryan McCauley is hoping to prove he’s ready to play Super Rugby with a strong World Championship campaign. The giant lock will return for his second crack at the championships and said he’s got a lot to prove in Georgia next month. “It’s a great stepping-stone. A lot of the guys playing Super Rugby now were playing in this tournament not long ago, guys like Issak Rodda, Andrew Kellaway, Mack Mason. “You can see the pathway and that’s exciting but it’s going to be a really good test to play against the best 20 year olds in the world.” Australia was thumped by New Zealand 43-6 on the Gold Coast earlier this month and coach Simon Cron blamed a lack of core skills for the disappointing result. “We had Mario Ledesma and Mick Byrne down for the first few days of camp and we worked really hard on our basic skills and changing some of the bad habits some of us had,” McCauley said. “Obviously our skills let us down on the Gold Coast