This has got to some sort of record. 10 DC wins in a year. Anybody has the numbers on this?
In 1982, McEnroe was undefeated : won his 8 singles (including the famous 6-hour match against Wilander which was a decisive rubber) and 4 doubles, but 3 singles were not live rubbers because the USA had a very good team of course.
in 1975, Borg won his 12 singles (all live rubbers), and he also won 3 doubles (he had losses in doubles). But yes they had to play 6 matches rather than 4 in that time to win the Davis cup
In 1989, Becker won 7 singles (defeated Edberg, Wilander and Agassi), and 3 doubles, he would have won 8 singles if he had not been exhausted by his 5-setter match against Agassi and the double against Flach-Seguso. He had only one defeat in doubles against Czechoslovakia.
Becker also was great in Davis cup in 1987 and 1988.
Berdych's run has great numbers but the best opponents he's had to face so far are Almagro and Tipsarevic ...