By Ed Molina (staff@latinospost.com) | First Posted: Aug 29, 2013 12:24 PM EDT

Rain has caused delays as Day 4 of the US Open rolls around, forcing a four-hour delay in the middle of the day yesterday, with Thursday's forecast calling for a mix of clouds and sun, with a high of 79 degrees, and a good chance of rain.

Should rain let up and allow for a full days schedule, Serena Williams, Roger Federer, Rafael Nadal and 17-year-old Victoria Duval, who came into the tournament as a qualifier, will showcase the day's action. Duval upset number 11-ranked and 2011 U.S. Open winner Sam Stosur, 5-7, 6-4, 6-4, on Day 2 of the tournament. Duval took advantage of the former U.S. Open champion's 56 unforced errors to seal her victory.

"Obviously it's a great feeling to beat a past champion. And Sam is amazing," said Duval. "Although she didn't play nearly her best today, I played amazing, so I'll take it."

Duval will take on Daniela Hantuchova on Court 11 today.

Meantime, Williams will headline action at the daytime action at Arthur Ashe Stadium against Galina Voskoboeva, a match that was supposed to be played Wednesday, but was delayed due to rain. Federer will play after Williams, as he is slated to face Carlos Berlocq. Caroline Wozniacki takes on Chanelle Scheeper in the 7 p.m. EST nightcap, with Nadal playing against Rogerio Dutra Silva. No. 2-ranked Victoria Azarenka goes up against Aleksandra Wozniak in the third match at the Louis Armstrong Stadium while American John Isner takes on Gael Monfils on the last match of that day at Louis Armstrong Stadium.

Live Television Coverage
The 2013 U.S. Open can be seen Tennis Channel and ESPN 2 between 11 a.m. EST to 7 p.m. EST.

Live Stream (Online)
Live stream coverage can be seen on ESPN3 or US Open Live.

Live Stream (Radio)
Live stream coverage can be heard on USOpen.org.

Match Start Times
You can find Day Two's schedule by clicking here.

Live Score
Live scores could be followed by clicking here