The way she's playing right now, Yes she will win Wimbledon. Her serve and ground strokes are great. Sharapova is playing well, but not good enough to beat Serena . Li Na just won a tournament weeks ago on grass , but i dont see her giving serena trouble. As much as I dont want to see a Williams win AGAIN , i think it will happen.

no

I have decided to back Serena to win Wimbledon this year, she is playing to good at the moment.

Na Li has a better chance of beating Serena then Sharapova.

The only people who can stop Serena are Venus and Clijsters .
Although, like the other answerer has said, i'd LOVE to see Sharapova beat Serena, it is very unlikely.
And unless one of them (Venus, Clijsters) makes the final - Serena has it in the bag.

Another Wrestlemania, another victim....