Mathewson is a very good halfback - he should be in the RWC squad ahead of Ellis in my opinion (though he doesn't have the kicking game the AB's selectors want in their halfbacks). Behind him there isn't too much in the 'under 25 bracket' - Aaron Smith and Tawera Kerr-Barlow are both promising young players but are probably still a year or so away from reaching their potential (TJ Perenara is another, but he is even younger). Colin Slade is class a 10, as is Aaron Cruden. There are a pile of young talented 10's that have the potential to make the AB's in the next few years e.g. Beauden Barrett, Gareth Anscombe, Tyler Blyeendaal and Lima Sopoaga.