Serena Williams second on Ashe on Thursday

Serena Williams celebrates a point against Mona Barthel of Germany during the Western & Southern Open on August 15, 2013
© Getty Images
Serena Williams will finally get her US Open second-round clash with Galina Voskoboeva underway in the second match-up on the Arthur Ashe court on Thursday.

The order of play for day four of the US Open has been released as organisers struggle to cope with rain delays in New York.

Day three suffered from the weather meaning that many of the women's second-round matches were pushed back a day in an effort to cope with the pile-up.

As a result, play will start slightly earlier on day four at Flushing Meadows. Below is the order of play for the showcase courts.

Arthur Ashe:
Sara Errani vs. Flavia Pennetta
Not before 5pm: Serena Williams vs. Galina Voskoboeva, Roger Federer vs. Carlos Berlocq
11pm: Caroline Wozniacki vs. Chanelle Scheepers, Rafael Nadal vs. Rogerio Sutra Silva

Louis Armstrong Stadium:
Angelique Kerber vs. Eugenie Bouchard, David Ferrer vs. Roberto Bautista, Victoria Azarenka vs. Aleksandra Wozniak
Not before 9.30pm: John Isner vs. Gael Monfils

Christina McHale vs. Elina Svitolina, Ana Ivanovic vs. Alexandra Dulgheru, Sam Querrey vs. Adrian Mannarino, Milos Raonic vs. Pablo Andujar

Roger Federer of Switzerland wipes his face between points while playing Rafael Nadal of Spain during the Western & Southern Open on August 16, 2013
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ATP RankingsPoints
1Scotland flag Andy Murray7,750
2Spain Rafael Nadal7,555
3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,780
5Serbia Novak Djokovic5,325
6Croatia Marin Cilic5,155
7Alexander Zverev4,470
8Austria Dominic Thiem4,030
9Japan Kei Nishikori3,285
10Canada Milos Raonic3,230
11Bulgaria Grigor Dimitrov3,070
12France Jo-Wilfried Tsonga2,770
13Belgium David Goffin2,560
14Spain Roberto Bautista Agut2,425
15Czech Republic Tomas Berdych2,390
16United States Jack Sock2,335
17Pablo Carreno Busta2,305
18Lucas Pouille2,220
19United States John Isner2,110
20United States Sam Querrey2,060