Which of the following has a twin brother who plays doubles together: Gigi Fernández or Mike Bryan?
Gigi Fernández Beatriz "Gigi" Fernández (born February 22, 1964) is a former professional tennis player. She turned professional in 1983 and is the first Puerto-Rican-born athlete to win a Gold Medal, and the first to be inducted into the International Tennis Hall of Fame.
Michael Tierney (musician) Michael "Mike" John Tierney (born 18 January 1977), is a member of Australian band Human Nature and younger brother of fellow member Andrew Tierney.