The Grandstand court during a thunderstom at the 2013 US Open at the USTA Billie Jean King National Tennis Center September 2, 2013 in New York. Rain has stopped play at the US Open with two women's fourth-round matches interrupted by showers. Slovakia's Daniela Hantuchova led American Alison Riske 6-3, 4-4 and Italy's Flavia Pennetta led Romanian Simona Halep 6-2, 4-5 when the storm struck, Halep reaching set point in the 10th game by winning as the first drops poured down. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)
At its worst, Monday's rain was a downright deluge. Here, the Grandstand court gets soaked. The delay lasted four hours.
Water floods the entrance to the Grandstand court during Monday's thunderstorm. The delay caused many matches to be moved or pushed back to Tuesday.
It's in my eyes!
Drops of rain on a glass window created a blurred backdrop during Monday's rain delay. Only one singles match was postponed as a result — No. 2 Victoria Azarenka's fourth-round showdown with No. 13 Ana Ivanovic.
Go, cars, go
Court attendants dry the court in Arthur Ashe Stadium following the delay. The match between No. 7 Roger Federer and No. 19 Tommy Robredo, originally scheduled for Ashe, had to be moved to Louis Armstrong Stadium.
Watch your step
The rain left standing water all over the grounds at the Billie Jean King National Tennis Center. But many of the fans stuck it out.
Yeahhhh ... we can't play in this
A close-up view of the court surface gives you an idea how powerful the rain was at times Monday.
Not going anywhere
A fan waits out the delay high up in the bleachers at Arthur Ashe Stadium while the court dryers work their magic.
Read the bad news
An electronic sign keeps fans in the know during the rain delay. Weather issues have pushed the men's final back to Monday each of the past five years. This year, they went ahead and scheduled it for Monday.
Watch your step
A ball boy chair-hops over a flooded area between Grandstand and Louis Armstrong stadiums during Monday's delay.
Tennis fans wait out the rain delay under cover at Arthur Ashe Stadium. After Roger Federer's match was moved to Louis Armstrong Stadium, many fans ended up waiting in line there, hoping to catch a glimpse.