2012 French Open matchups: Federer vs. Del Potro, Djokovic vs. Tsonga!

Any upsets here? These matchups are really interesting. Will Tsonga throw down the lightning bolts and upset Djoko? Will Del Potro finally hammer the forehands and serves of the U.S. Open victory over Fed?

I think out of the two, I am gonna pick Djoko to be more likely the victim of an upset.