He was tired though seriously, you noobs can't admit that. Murray lucked his way to the final in US Open 2008.....but I think he earned his runs to the finals in AO 10 and 11.
US08 was very fast. In fast surface Nadal and Djoker can't dominate, as simple as that. Today 2 persons playing clay court tennis are dominating. I don't believe defense and endurance are the new evolution, the courts are the cause of it.