Re: US Open Surface Question Please!
They won't be used. However, if the conditions become monsoonlike they may move play there.
From the ATP 2008 Rulebook (p.43):
Responsibilities of ATP Supervisor (or Referee for that matter):
6) Decide if a court is fit for play or decide if a match should be moved to another court.
The Supervisormay, if necessary to eliminate the possibility of a player having to play
two singles matches in one day, or if necessary to complete the event, move a match
to another court, indoors or outdoors, regardless of surface.