Rain is forecast today, so there likely will be weather delays. Play is scheduled to start at 7 a.m. ET. Among the top matches today: Roger Federer begins his quest for a seventh singles title against Uzbek Mikhail Kukushkin and defending champion Serena Williams is in action against Aravane Rezai of France. Also, John Isner and Nicolas Mahut will see if they can produce a sequel to their 11-hour match from last year.
