1955February 22nd: Starting in 1951, Little Mo dominated the game to an unbelievable extent. She triumphed in all of the nine Grand Slam tournaments that she competed in: the US Nationals (1951, 1952, 1953), the Australian Open (1953), Roland-Garros (1953, 1954) and
Wimbledon (1952, 1953, 1954). In 1953, she became the first female player to win the four major events in the same year, losing only one set in the process.
https://www.youtube.com/watch?v=_JIhJY_N_8Q