The USA will not have a singles player in the top 10 for the first time after Serena Williams will not come back to defend her points in Rome causing her to fall from the World No. 10 next week.
She would have been defending her doubles title with sister Venus Williams in Madrid if she was not injured.
Serena could fall several points. Bethanie Mattek-Sands is the next highest ranked woman for the USA that is playing at No. 41 in the World, but it's in the Madrid quarterfinals which will raise her ranking. She will play Na Li for the first time.
Venus is set to return for sure for Eastborne International. She agreed to play the grass tournament from June 11-18 for the first time since 1998.
Mardy Fish fell from the top 10 to the World No. 11 after only carrying the top 10 title from a week on April 18, 2011. He, along with Andy Roddick, won't be back to claim that top-10 spot for a while after losing in the first round in Madrid this week, their first tournament on clay.