David Ferrer and Tommy Haas have both withdrawn from the Monte Carlo Masters, which starts on Sunday. Ferrer cited physical problems, while Haas, who lost in Houston on Friday, was said to wants to change his schedule.

Haas’ withdrawal means that Ernests Gulbis will get into the main draw.

Roger Federer is also skipping the event, and Novak Djokovic is questionable due to the ankle injury he suffered during Davis Cup. Rafael Nadal is going for his ninth straight Monte Carlo title.