Iga Swiatek and Coco Gauff, who will face off in the tour’s year-end championships in Riyadh on Tuesday, can both attest to that as they bring their sometimes-superb, sometimes-shaky seasons to a close. After an hour an seven minutes, Swiatek won her fourth Roland Garros title, and tied Martina Hingis and Maria Sharapova on the major-title ledger.