United States will be without Venus and Serena Williams for the Fed Cup semifinal against Russia in Moscow.

A few days ago the news went out that Lindsay Davenport tried to persuade Venus to play Fed Cup, but Venus smiled and simply said "Nope". Serena’s answer was similar.

In an interview after the match against Marina Erakovic at the Sony Ericsson Open, Venus explained the story behind her decision to miss the Fed Cup.

"You know, I've tried to support Fed Cup as much as I could these few years, but sometimes I just get tired. Moscow's a long way, and I've had quite a few long trips already this year," said world No.7 Venus Williams.

"I'm going to be playing Amelia and Charleston, so I just couldn't play five weeks in a row. Obviously, my commitment to the tour is very important to me also, so I just can't do everything." (image via SI.com)

Justine Henin and Serena Williams made comfortable starts with straight-sets wins in round two of the Sony Ericsson Open in Miami. Top-seeded Henin beat Germany’s Angelique Kerber 6-4 6-2, while eighth-seeded Williams defeated Romania’s Edina Gallovits 6-1 6-2.

Today's match in Miami was Henin’s first since the end of February when she was upset by Francesca Schiavone in Dubai quarterfinals, the tournament Henin had never been defeated at before. Henin made the one-month break in order to rest her knee and train properly. (photo via Getty Images)

So far we’ve seen the photos, but now there's a video clip of the first ever game of tennis on water. As you probably know the event featured tennis stars Serena Williams and Rafael Nadal, and took place atop Miami's Gansevoort South Hotel overlooking South Beach.

Confident Serena Williams said: "I like hardcourts, I like grasscourts, I like claycourts, I can play on anything, including water."

The purpose of the match was to celebrate the start of the Sony Ericsson Open.

Serena Williams took part in the first ever tennis match on water, together with second-ranked men's tennis player Rafael Nadal.

The event took place atop Miami's Gansevoort South Hotel overlooking South Beach on its first day of business. The custom-made court was constructed in the 110-foot swimming pool set in the Gansevoort's exclusive 22,000-square-foot rooftop retreat. Read more »

Serena Williams worked the runway at the Wills India Lifestyle Fashion Week in New Delhi to help Hewlett-Packard launch their new limited-edition notebooks with Imprint designs. The three designs include Verve, Thrive, and Asian Odyssey. Read more »