All the normal topsprinters pretty much looks shaky this season, not in topform or semi-injured, Freire (what is going on with him?), Haüssler (another ? with his kneetroubles), Petacchi (perhaps still influenced by his crash), Cavendish (nowhere near topform) and so on. Boonen, Boasson Hagen and Bennati all seem in good shape, but also quite unstabile, but they must be the favourites. Ofcourse also Greipel and Farrar are posibilites, but Greipel has always dissapointed in clasics, and Farrar still also seem to lack some form.
The 1 sprinter that really looks in great shape right now though is Lorenzetto, so I hope Lampre will give him a chance instead of Petacchi, and in that case he is my topfavourite, but they'll propably stick with Petacchi anyways.
Other sprintcontenders should be Ventoso, Rojas and young Modolo who should all be certain top-finishers, but propably don't have the speed to win.
Plenty of breakaway candidates though, and if both Petacchi and Cavendish is weak, I think they will have a good chance this year. Most likely Gilbert, Pozzato, Breschel, Paolini, Luis Leon Sanchez and Sagan (if riding).
Anyways it will for sure be a very exiting race, at least the last 1/10 of it