The US Open is adjusting its mixed doubles schedule and offering $1 million in prize money in an effort to persuade top singles players to compete in the event.

The U.S. Open is moving its mixed doubles championship to the week before singles play begins, hoping a revamped format and $1 million prize will persuade top

In a dramatic move that was greeted with criticism in some quarters, US Open organisers said the mixed doubles event, using an amended rulebook, would now take place over two days of competition on 19-20 August at Flushing Meadows.