Dominic Thiem and Matteo Berrettini have both been ruled out of the Monte-Carlos Masters in a double blow to organisers.
The clay-court tournament, which traditionally forms an integral part of the build-up to the French Open, had already been dealt a blow by the withdrawal of Rafael Nadal. The 11-time champion is currently recovering from a stress fracture to his rib cage.
Nadal learnt of the injury after losing in the final of the Indian Wells Masters, although his absence was tempered by the return of Novak Djokovic. The Serbian will play just his second tournament of the year in Monte-Carlo.
