Andy has 6-5 record against Federer but has lost the last three times they have met.
Federer played absolutely stunning first sets against both Berdych and Djokovic but after that his standard dropped. It increasingly looks like Federer can still play his very best but stuggles to sustain it like he used to. It is important that Murray sticks with it if Federer has one of his blistering spells.