I would have to say Kasey. The reason is that while Sullivan was injured last season, Keller played higher than his average standard and although he didn't save as many as he could have done, it was enough to earn us a 5-1 victory vs Chelsea in the worthington cup semi-final.
(Sully played in WC semi)
Paul Geoghegan: On the basis of the end of last season, it has to be Kasey Keller. Sullivan made a few mistakes towards the end of last season and looked suspect whilst, although Keller played fewer games, he looked solid.