Given that the Davis Cup recognizes only countries, not people,
and since there are no countries named "black" (or, at least, none currently assigned to play the Davis Cup),
the answer is: there have been no black winners of the Davis Cup.
Althea Gibson was the first African American international tennis player. She was the first person of color to win a Grand Slam tournament when she won the French Open in 1956.
Althea Gibson was the first black tennis player to win a Grand Slam title (1956). Arthur Ashe was the first MALE black tennis player to win a Grand Slam title (1968).
American Athea Gibson was the first black professional tennis player. She won her first Grand Slam tennis title in 1956.
No he was not the first black men to play tennis. Though he was the first black man to win the Us open tennis. But I will try to find the first black man to play tennis.
Ernie Davis
In professional tennis, the first black male to win a Grand Slam event in singles was Arthur Ashe in 1968 at the U.S. Open.
Arthur Ash is a tennis player, and the first black man to win Wimbledon.
My idol, Serena Williams was the first black woman to win a major tennis championship.
A tennis player.
Return first, unless you are a professional men's tennis player
In tennis, the player who did not serve first in the first set serves first in the second set.
In tennis, the player who did not serve first in the tiebreak game serves first in the following game.