Maureen Catherine Connolly-Brinker (neConnolly; September 17, 1934 - June 21, 1969) known as "Little Mo", was an American tennis player, the winner of nine Grand Slam singles titles in the early 1950s. In 1953, she became the first woman to win all four Grand Slam tournaments during the same calendar year. The following year, in July 1954, a horseback riding accident seriously injured her right leg and ended her competitive tennis career at age 19.