Novak Djokovic  vs Rafael Nadal . This paragraph was eaten by blogger somehow after I published it. Basically, what I said was that Djokovic is having one of his best seasons on clay and Nadal is having one of his worst Mad Professah's pick: Djokovic.
Andy Murray  vs David Ferrer . Andy Murray has been considered a relatively strong clay-court player but until this year he had never won a title on that surface. Then he got married April 19 and since then he has won two tournaments (Hamburg and Madrid Masters) and is on a 14-match winning streak. He faces the 2013 French Open finalist David Ferrer whom he has never beaten on clay (in 4 tries) although he has a 9-6 overall career head-to-head lead against the indefatigable Spaniard. Then again Murray had never beaten Nadal until two weeks ago either. It's clear that the married Murray is not the same player as the single Murray and I believe that will be reflected in the result here to allow the Brit to reach his 3rd career semifinal at Roland Garros. Despite the fact that Ferrer is considered the more successful clay court player overall, the argument can be made that he hasn't faced this Murray. Mad Professah's pick: Murray.
Kei Nishikori  vs Jo-Wilfried Tsonga 
Roger Federer  vs Stan Wawrinka . This will be a tougher match then it looks on paper. Despite Federer having a 16-2 head-to-head advantage over his countryman and frenemy, Stan Wawrinka's two wins have come on clay and the 2014 Australian Open champion has generally been competing better against his compatriot since he ascended to the upper echelons of men's tennis. However, he had a setback in the Rome semifinals just a few weeks ago where he succumbed meekly. I definitely do not expect that to happen here. That being said I still expect (and want) Federer to get through his 45th quarterfinal and reach his 37th major semifinal. Mad Professah's pick: Federer.