This came from the NBC sports web site:
First rubber: John Isner vs. Victor Troicki
So I know that this came from an American news source. So what the hell is a rubber? Because I know it’s not being used in any context that I am familiar with.
The US Davis Cup team is trying to make up for the loss of Andy Roddick by fielding a team of super-giants. Their plan is get players with a wing span-long enough to reach all lines of the court while standing flat-footed in the center. I think they have done it.