it's certainly happened 2-3 times recently. You'd think with all the money they have they might invest in a roof.
Ah, but we don't want one of those Ruthie, especially if it's a Murray/Federer final. My nerves wouldn't take the strain lol.
Seriously though, it did strike me as ironic last year, with all the rain they had to deal with at the USO. The rain at Wimbledon used to be a big talking point, and a fuss was made until they put a roof on Centre Court. However, in the North American stretch they don't even have court covers. It strikes me as very bizarre.