I'm hoping that Federer dismantles Tomic, although the promo for the match was very well done (11 year old Tomic stating his dream is to beat Fed). Tomic could take a set off Fed and push him, but I don't think he will get anywhere near a victory. Fed in 3 tough sets, possibly 7-6 7-6 6-4.
Sharapova is a delight to watch, she was astonishing this evening, but fuck, the squealing is such a downer on enjoying her performances. She'd have a lot more fans if she stopped, or greatly reduced it. Props to Venus for having that smile still in tact despite being outplayed.
Pretty much what Maverick said, I expect Federer to beat Tomic in a close 3 sets. Don't really expect him to take a set of Fed but there is possibility. Don't expect Kei to beat Ferrer but expect him to give Ferrer a big test. I reckon it will go to 5 sets.
And yeah, Del Potro is definitely has a chance in beating Murray, if he plays well he is capable of causing an upset. Hoping he doesn't though, badly want to see Murray/Fed in the semis.
As for Fed/Tsonga, if Tsonga does have one of those days, he will cause Federer a lot of problems and could beat him. That's unlikely though.