Question: Which of the following has a twin brother who plays doubles together: Gigi Fernández or Mike Bryan?
Context: Michael Carl Bryan (born April 29, 1978) is an American professional tennis player.  The right-hander turned professional in 1998.  With his twin brother Bob, he has been world No. 1 doubles player for much of the last several years, first achieving top ranking in September 2003, and they became the second men's doubles team to complete the career golden slam by winning the 2012 Summer Olympics.  He currently holds the records for the most ATP men's doubles titles (115) and final appearances (171), and is tied for fourth all-time in men's titles in the Open Era, all with his brother with the exception of one with Mahesh Bhupathi and another with Mark Knowles. The Women's Doubles competition at the 1992 Wimbledon Championships was held between 22 June and 5 July 1992 on the outdoor grass courts at the All England Lawn Tennis and Croquet Club in the Wimbledon district of London, England.  Gigi Fernández and Natasha Zvereva won the title, defeating Jana Novotná and Larisa Savchenko-Neiland in the final. The Women's Doubles tournament at the 1993 Wimbledon Championships was held from 21 June to 4 July 1993 on the outdoor grass courts at the All England Lawn Tennis in the district of Wimbledon in London, England.  Gigi Fernández and Natasha Zvereva won the title, defeating Larisa Neiland and Jana Novotná in the final. The Women's Doubles competition at the 1992 French Open was held between 25 May and 7 June 1992, on the outdoor clay courts at the Stade Roland Garros in Paris, France.  Gigi Fernández and Natasha Zvereva won the title, defeating Conchita Martínez and Arantxa Sánchez Vicario in the final. 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. Gigi Fernández and Natasha Zvereva were the defending champions, but lost 6–2, 6–1 in the final to Lindsay Davenport and Mary Joe Fernández.  It was the 1st Grand Slam doubles title and the 8th title overall for Davenport, and the 2nd Grand Slam doubles title and the 14th title overall for Fernández, in their respective careers. Jana Novotná and Helena Suková were the defending champions.  Novotná and Suková entered the tournament with different partners, meeting in the semifinals were Novotná and Gigi Fernández eliminated Suková and Arantxa Sánchez Vicario.  Novotná then repeated as doubles champion with Fernández after defeating Larisa Neiland and Natasha Zvereva in the final. Natasha Zvereva, or Zverava, (born Natallya Maratawna Zverava; Belarusian: Наталля Маратаўна Зверава; 16 April 1971) is a former tennis player from Belarus.  Zvereva was the first major athlete in the Soviet Union to demand publicly that she should be able to keep her tournament earnings.  The team of Zvereva and Gigi Fernández won more women's doubles titles and Grand Slam women's doubles championships than any other team since that of Martina Navratilova and Pam Shriver. The Women's Doubles competition at the 1994 Australian Open was held between 17 January and 30 January 1994 on outdoor hard courts at the National Tennis Centre at Flinders Park in Melbourne, Australia.  Gigi Fernández and Natasha Zvereva won the title, defeating Patty Fendick and Meredith McGrath in the final. The Women's Doubles tournament at the 1993 French Open was held from 24 May until 6 June 1993 on the outdoor clay courts at the Stade Roland Garros in Paris, France.  Gigi Fernández and Natasha Zvereva won the title, defeating Larisa Savchenko and Jana Novotná in the final.
Answer: Michael Carl Bryan