Rafael Nadal says he will only play at the French Open next month if he feels "capable enough to compete".
Spaniard Nadal, a 14-time champion at Roland Garros, missed the French Open for the first time in 19 years through injury in 2023.
The 37-year-old has indicated he plans to retire after the 2024 season.
He is set to make a farewell appearance at the Madrid Open this week and faces American 16-year-old Darwin Blanch in the first round on Thursday.
"If I was in Paris today, I wouldn't go out to play," Nadal said.