New York:The US Open Championships quarter-final between top seed Roger Federer and two-time former champion Andre Agassi is hanging in the balance at 6-3, 2-6, 7-5. The remnants of Hurricane Frances swept into New York on Wednesday forcing play to be halted of the eagerly-awaited match. The players had endured and eight-and-a-half hour rain delay before finally stepping on to the Arthur Ashe Court at Flushing Meadows. And Federer will start as favourite in the afternoon session on Thursday with two-sets-to-one lead. Elsewhere, Tim Henman of Great Britain, is on the verge of a first US Open semi-final appearance as he leads 22nd seed Dominik Hrbaty of Slovakia 6-1, 7-5, 4-5. In the ladies draw, former champion Lindsay Davenport and ninth-seeded Russian Svetlana Kuznetsova dodged the showers to set up a semi-final clash in the women's singles before the rain returned and play was abandoned for the day.