
Rafael Nadal announced Tuesday that he'll be sidelined four to six weeks with a stress fracture in his left rib.
Nadal, winner of 21 Grand Slam singles titles, complained of an ailing chest following Saturday's semifinal victory against Spanish compatriot Carlos Alcaraz at the BNP Paribas Open in Indian Wells, Calif. Taylor Fritz posted a 6-3, 7-5 win over Nadal in the final on Sunday.