JJ and Mono came through today and will meet in the next round. I'm really intrigued by this one. Obviously you never know what you're going to get with Mono, and she hasn't exactly been dominating in the early rounds (she needed three sets to finish Lucie). That said, she's fitter and we know she can cause problems for the top players.
As for JJ, she's progressing through in straight sets, but the wins have never been convincing. For all the talk about her getting stronger to get more pop on that serve, that thing is still a duck. She's still extremely vulnerable on her own serve.
I'm not saying Mono FTW. But if JJ doesn't up her form dramaticaly, this isn't going to be a cakewalk.