Hewitt is not tired at all. He said so in his interviews. Roddick is not tiring to play, he plays short bam-bam points. Hewitt will counterpunch beautifully, and will have no problems with fatigue. It will be an easy 3, maybe 4 set win for Hewitt. Then in the final against Federer, after Federer has spanked Safin, the fatigue will start to show since Federer plays longer points.