Champion Murray ready to go
Andy Murray will finally get his US Open title defence under way when he takes on France's Michael Llodra on Wednesday night.
The US Open is the only grand slam where the first round stretches into Wednesday, and Murray is unlikely to have been impressed when he discovered he would not be playing until the night session.
The decision also goes against the tournament's own schedule, which features second-round matches for both men and women on Wednesday night.
When asked for an explanation, the United States Tennis Association said the schedule was a guide and not something that has to be stuck to rigidly.
Murray may have been indirectly affected by Monday night's rain, with both Roger Federer, and Rafael Nadal's next opponent Rogerio Dutra Silva, forced to play or complete their matches yesterday.
It would therefore have been seen as unfair to make either play in the one second-round match tonight.
But the scheduling means Murray will not start his tournament until more than 48 hours after Nadal, one of his chief rivals for the title, and the unpredictable New York weather could yet see the match pushed into the fourth day.
Laura Robson will play her second-round match before Murray gets going, with the 30th seed taking on fellow 19-year-old Caroline Garcia from France second up on Court 11.
Robson looked in decent form in her first-round win over Lourdes Dominguez Lino, showing no ill effects from the wrist injury that had forced her to miss the last three tournaments.
It is potentially a tricky match for Robson, with Garcia tipped by Andy Murray as a future world number one when he saw her nearly upset Maria Sharapova at the French Open two years ago.
Robson said: "I have seen her play a couple of times here and there. Not very recently though.
"I think she's a pretty smart player. She plays with quite spinny shots. I just have to wait and take my chances in the rally."
Heather Watson made it six sets in a row for British players at the tournament when she won the opener against 21st seed Simona Halep but she could not maintain her advantage and went down 4-6 6-4 6-2.
It was no disgrace, with Halep having won four of her last seven tournaments, but Watson knew the opportunity had been there and she was in tears in her press conference.
The Guernsey player said: "I thought I played a good two sets and in the third set my fitness let me down a bit. I was cramping in my legs. I think partly because in the first two sets I was a bit tight.
"I think that's why it hurts a lot is because I was so close. But if I keep making opportunities for myself I'll take some."
American teenager Victoria Duval pulled off the result of the day, the 17-year-old qualifier upsetting former champion Sam Stosur in three sets, while there were comfortable wins for Roger Federer and Novak Djokovic.