Top seed Dinara Safina survived a tough test of her title credentials before beating Tsvetana Pironkova of Bulgaria 7-6, 6-2 in the second round of the WTA event in Indian Wells on Friday.
Russian Dinara Safina said she let herself down by acting like a "spoilt girl" during her semi-final defeat by Serena Williams at the U.S. Open on Friday.
British sixth seed Andy Murray stormed into the quarter-finals of the US Open for the first time with a 6-1 6-3 6-3 demolition of Swiss 10th seed Stanislas Wawrinka on Monday.
In a match that finished after 2.00am, the sixth seed was ousted by Kohlschreiber 6-4 3-6 7-6 6-7 8-6, handing Roddick his earliest exit from the event since his debut in 2002.
Cypriot Marcos Baghdatis defended himself in the face of a race controversy on Friday after the release of a video in which he appeared to chant anti-Turkish slogans at a party. 'In that video from 2007 I was supporting the interest of my country, Cyprus, while protesting against a situation that is not recognised by the United Nations,' he said.
As one of the most recognisable faces in India, Sania Mirza is already something of an expert when it comes to dealing with pressure.
Novak Djokovic may be using the Hopman Cup as preparation for this month's Australian Open but the world number three is also clearly enjoying himself at the mixed team event.
Jelena Jankovic suffered a fitness scare ahead of this month's Australian Open when the Serbian picked up a thigh injury at the Hopman Cup mixed team event on Wednesday.
Svetlana Kuznetsova beat Hungarian teenager Agnes Szavay 6-1 6-4 to reach the U.S. Open semi-finals on Wednesday and believes she is a better player than when she won the title in 2004.
Russian Nikolay Davydenko saw off Tommy Haas in the U.S. Open quarter-finals for the second successive year, beating the German 6-3 6-3 6-4 on Wednesday to reach the last four without dropping a set.
US captain Patrick McEnroe said the duo would be joined by the world's top-ranked doubles pair, Bob and Mike Bryan. John Isner and Sam Querrey will travel with the team as practice partners.
Federer, bidding to become the first man in the Open Era to win the title in four straight years, has not lost to Roddick in four years, a run stretching to 10 matches.
Justine Henin and Serena Williams will square up in a battle of former champions at the U.S. Open on Tuesday, while Rafael Nadal and Novak Djokovic headline the action in the men's event.
Maria Sharapova's U.S. Open title defence ended in tatters on Saturday when she was stunned 6-4 1-6 6-2 by Polish teenager Agnieszka Radwanska in the third round.
Briton Tim Henman bowed out of grand slam tennis with a second-round defeat at the U.S. Open on Friday, but said he would be leaving the sport content that he had made the most of his potential.
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.
Maria Sharapova continues the defence of her U.S. Open title with a second round match against Australian Casey Dellacqua on Thursday.
Second seed Daniela Hantuchova suffered a setback before next week's U.S. Open when she was beaten by a Hungarian qualifier in the second round of the WTA event in New Haven on Wednesday.
Sania advanced to the second round with a 6-3 6-3 win over Spaniard Anabel Medina Garrigues.
Swiss Federer will be bidding for his fourth consecutive title at Flushing Meadows, while Belgian Henin is hoping to repeat her 2003 triumph.