World No . 1 Novak Djokovic beats Robin Haase to reach last four of Monte Carlo Masters . Federer wins Madrid Open for first time since 2009. Serbian says grandfather Vladimir was with him in spirit as he won his quarterfinal . World No . 2 Rafael Nadal also through to semifinals but Andy Murray knocked out .
World No . 1 Novak Djokovic beats Robin Haase to reach last four of Monte Carlo Masters . Emotional Djokovic speaks to press after his grandfather passed away on Thursday . Serbian says grandfather Vladimir was with him in spirit as he won his quarterfinal . World No . 2 Rafael Nadal also through to semifinals but Andy Murray knocked out .