Spain's Rafael Nadal, left, takes his towel from coach Carlos Moya during a training session at Roland Garros stadium ahead of the French Open tennis tournament in Paris, Thursday, May 27, 2021. (AP Photo/Michel Euler)

Spain's Rafael Nadal returns the ball during a training session at Roland Garros stadium ahead of the French Open tennis tournament in Paris, Thursday, May 27, 2021. (AP Photo/Michel Euler)