Quarter Finals vs Tipsarevic - 7-6(2), 6-7(3), 6-0, 3-0 ret
Conclusion - This is an incredibly hard match to predict but I just have a feeling that Federer can overcome Djokovic in 5 sets.
Quarter Finals vs Isner - 7-5, 6-4, 3-6, 7-6(2)
Conclusion - I can't see Nadal losing more than a set in this match. Murray is just not good enough and can't match up to Nadal's form.