"I have a grade 1 tear in my right hamstring which will keep me off the courts for several days, after the exams carried out this morning," the 19-year-old Spaniard explained in a tweet.
Winner of the Buenos Aires tournament ten days ago against Briton Cameron Norrie, Alcaraz however lost to the same opponent in the final of Rio on Sunday (5-7, 6-4, 7-5).
During the meeting, the Spaniard appeared bothered by pain in his right thigh - the very one that forced him to give up the Australian Open in January - and he left doubts hanging over the conference. release on his participation in the Acapulco tournament this week.
Last year, the Spaniard became the youngest world No.1 since the creation of the ATP rankings in 1973, winning his first Grand Slam title at the US Open, before experiencing a series of physical glitches and having to forfeit the Australian Open.
Winner in Melbourne, the Serbian Novak Djokovic had recovered the first place in the world.
Cameron Norrie, world No.12, also withdrew from the Acapulco tournament due to "fatigue" according to the organizers.
© 2023 AFP