Fifth seed Andy Roddick advanced to the third round of the U.S. Open when his Argentine opponent Jose Acasuso retired with a left knee injury at the end of the third set on Thursday.
Defending champion Andy Roddick fought to defeat qualifier Paul Goldstein to reach the quarter-finals of the $380,000 U.S. Clay Court Championships.
Sixth seed Robin Soderling delivered a tennis master class in the opening set before eliminating fourth seed Andy Murray 6-1, 7-6 in the quarter-finals of the Indian Wells ATP tournament on Friday.
World No 1 Rafa Nadal fell to Cyprus's Marco Baghdatis 6-4, 4-6, 6-4 in the quarter-finals of the Cincinnati Masters Friday as three of the top four seeds lost out.
Top seed Andy Roddick advanced to the Memphis Championship final with a 6-3, 6-4 win over Juan Martin Del Potro on Saturday and will face big-hitting Canadian Milos Raonic.
Rafael Nadal and Andy Roddick advanced into the last eight of the Miami Masters.
World number three Andy Roddick advanced to the final of the invitational Kooyong Classic after Nicolas Kiefer withdrew just four minutes into their match with an ankle injury.
Top seeded Roddick beat Austria's Jurgen Melzer while Grosjean scored over Nicolas Lapentti in the semi-finals of the U.S. Men's clay court championships.
The defending champion beat Dominik Hrbaty of Slovakia in the quarter-finals of the RCA Tennis Championships.