Randwick backrower Sam Croke has been named to make his Australian Sevens debut at this weekend's World Series tournament in Hamilton. Andy Friend has made three changes to the side that won last weekend's Sydney Sevens in emphatic style, with Lewis Holland and Boyd Killingworth both ruled out through injury and Jesse Parahi rested. Warringah backrower Tom Connor retains his spot in the squad after making his debut in Sydney, while Croke's Randwick teammate Dylan Pietsch has also earned a recall. Australia, now ranked third in the world rankings, are in Pool A alongside Wales, Spain and Sevens World Series heavyweights Fiji. “I was exceptionally proud of the performance in Sydney. We had marked it as a key tournament and all the boys aimed up and delivered on the big stage," Friend said. "Now it's about backing that up, not just this week but on a consistent basis. "It's disappointing for Lewy, Boyd and Jesse to miss the Hamilton leg but it's also a great opportunit