De Minaur left hanging by rain at US Open

Alex de Minaur has had his US Open second-round match postponed for a day.

Drizzling rain in New York left de Minaur holed up in the Flushing Meadows locker room for six hours on Wednesday, before a break in the weather allowed the Australian No.2 on court briefly.

But de Minaur only managed to squeeze in one service game before play on all outside courts was suspended for the day eight minutes into his clash with Christian Garin.

De Minaur was leading the Chilean 31st seed 1-0, with Garin 30-love up on serve when play was stopped.

De Minaur was asked to return on Thursday, when five other Australians were also scheduled for second-round action.

Ashleigh Barty is certain to play her second-round match against American Lauren Davis on Wednesday night, as planned.

Second seed Barty will feature in the first night match under a closed roof on Louis Armstrong Stadium, starting at 7pm (9am Thursday AEST).