World number two Carlos Alcaraz (20) has withdrawn from this month's Swiss Indoors championships in Basel due to injury, organisers said on Wednesday.
Alcaraz's withdrawal is a blow to his hopes of gaining ground on Novak Djokovic in the ATP rankings, with the top-ranked Serbian next in action at the Paris Masters beginning on October 30th.
"Alcaraz had to cancel his start at the Swiss Indoors (October 21-29) today due to an injury," organisers said in a statement.
"According to his doctor's bulletin, the world number two is suffering from an inflammation of the sole of his left foot and problems in his gluteal muscles."
Two-time Grand Slam champion Alcaraz was defeated by Grigor Dimitrov in the Shanghai Masters round of 16 earlier this month.
