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Live text - US Open day four
Caroline Wozniacki and Roger Federer take centre stage as Vera Zvonareva starts day four at the US Open with Maria Sharapova and Novak Djokovic in action later.

Murray eases through in New York
Britain's Andy Murray cruises into the second round of the US Open with a straight-sets victory over Slovakia's Lukas Lacko.

Angry Roddick falls to Tipsarevic
Ninth seed Andy Roddick sees his hopes of claiming a second US Open title end with a second-round defeat by Janko Tipsarevic in New York.

Baltacha campaign ends at US Open
British number one Elena Baltacha's run at the US Open ends in round two with defeat by 27th seed Petra Kvitova.

Azarenka collapses during match
Tenth seed Victoria Azarenka collapses during her second-round match against Gisela Dulko, while former world number one Ana Ivanovic thrashes Jie Zheng.

US Open day three as it happened
Andy Roddick is beaten in the night session on day three of the US Open after Andy Murray's earlier win over Lukas Lacko, but defeat for Elena Baltacha.

Venus & Ivanovic into round three
Third seed Venus Williams and former world number one Ana Ivanovic win their second-round matches at the US Open.

Sharapova & Jankovic edge through
Maria Sharapova and Jelena Jankovic come through tough opening encounters before top seed Caroline Wozniacki storms into round two of the US Open.