1. Rafael Nadal v Grigor Dimitrov Grigor Dimitrov It has been business as usual for Rafael Nadal in Monte-Carlo with two pretty routine wins over Marinko Matosevic and Philipp Kohlschreiber.  Nadal beat Kohlschrieber, 6-2 6-4 in the third round, facing no break points on his serve.  Nadal’s next opponent is the unseeded, Grigor Dimitrov, who…