Defending champion Carlos Alcaraz says the results of the next test on his injured wrist will be "crucial" in determining whether he plays at the French Open.

The world number two pulled out of the Barcelona Open last week after sustaining an injury to his right wrist in his first-round victory, and later withdrew from the Madrid Open, which starts on Tuesday.

Seven-time Grand Slam champion Alcaraz, who has won back-to-back French Open titles, has described the injury as "more serious than any of us expected".

The French Open runs from 24 May to 6 June.

"We've been trying to do everything we can do to make sure that this test goes well," Alcaraz told Spanish television channel TVE.