Nadal and Djokovic were scheduled to start around 4:30 p.m. Sunday, but the rain began about two hours before and hadn't stopped by 6:15 p.m., when tournament officials decided to call it a night. They rescheduled it for no earlier than 4 p.m. Monday
Djokovic could use the extra rest. He made it to the final with a grueling five-set win over Roger Federer on Saturday. Nadal won his match in straight sets.
This marks the first three-year string of delayed finishes since the men's and women's singles competitions were combined and played at the same site in 1935.