My Semi-final picks/ call your bookies!

Dear Readers,
Thanks for your support.

Here are my picks for the 2008 US Open Semifinal matches:

Nadal over Murray in 5.
Djokovic over Federer in 4.
Serena over Safina in 3. (not sure about this one, and I'm rooting for Dinara)
Jankovic over Dementieva in 3.