The US Open tennis tournament will move the women's final to Sunday and the men's final to Monday for 2013 after a fifth successive year of weather delays disrupted the schedule in September.
The change, building in a rest day between both the men's and women's semi-finals and finals to conform with the other three grand slams, is only for next year.
A decision about the 2014 event and beyond will be addressed later.
The USTA also announced an addition of $4.7 million to the prize money pool for the year's final grand slam, bringing the total to $35 million.
The USTA move puts an end to what had come to be known as Super Saturday at the US Open, which had scheduled the men's semi-finals and women's final on the same day since 1984.
Rain delays have wreaked havoc with the completion of the championships, triggering an annual debate and complaints from players and spectators over why the showcase courts are not covered.
Wimbledon and the Australian Open both have retractable roofs over their centre courts and the French Open has announced plans to do the same at Roland Garros.
The US Open men's singles semi-finals will continue to be played in a single day session on Saturday, with the men's singles final to take place on Monday.
The women's semi-finals will be played on Friday as usual, with their championship match on Sunday.