Rafael Nadal was pushed all the way by John Isner in Monte Carlo . Roger Federer , however , was knocked out in straight sets by Grigor Dimitrov . Gael Monfils is Monfils next opponent after beating Stanislas Warwinka .
Rafael Nadal was pushed all the way by John Isner in Monte Carlo . Roger Federer , however , was knocked out in straight sets by Gael Monfils . Grigor Dimitrov is Monfils next opponent after beating Stanislas Warwinka .