What I see is that Davydenko has kept his RG form. He might be the 3rd best player on hardcourt this summer.
I'm not sold on Nadal off clay. Davydenko might be the second best player in the US this summer.
US hardcourts is a different ballgame, a world of big servers and flat hitters - much faster surface than Wimbledon grass.. I don't think that Davydenko will be a match for guys like Blake, Roddick, Berdych, Gonzalez, Djokovic on US hardcourts.. Last year he was lucky, very lucky to reach semis, only courtesy of Safin's taking out all he could from Haas before losing to him in R16. And Haas didn't have a day of rest after that.. I don' think Davydenko is Top 5 on hardcourts. Maybe not even Top 10.