PARIS (AP) — Novak Djokovic has rallied from a two-set deficit to reach the French Open quarterfinals for the record 15th time. He won Monday when 19-year-old Lorenzo Musetti of Italy retired because of back pain and cramps two games from defeat. Djokovic faces No. 9 seed Matteo Berrettini in the quarterfinals. Rafael Nadal also beat a 19-year-old Italian, Jannik Sinner, in straight sets. Defending champion Iga Swiatek, at No. 8 the highest-seeded player left in the women’s draw, eliminated Marta Kostyuk. Swiatek has now won 22 consecutive sets at Roland Garros. She’ll play Maria Sakkari of Greece in the quarterfinals.