Question: Patrick McEnroe and Billie Jean King shared being known for playing what sport?
Context: Billie Jean King ("née" Moffitt; born November 22, 1943) is an American former World No. 1 professional tennis player.  King won 39 Grand Slam titles: 12 in singles, 16 in women's doubles, and 11 in mixed doubles.  King won the singles title at the inaugural WTA Tour Championships.  King often represented the United States in the Federation Cup and the Wightman Cup.  She was a member of the victorious United States team in seven Federation Cups and nine Wightman Cups.  For three years, King was the United States' captain in the Federation Cup. John McEnroe and Patrick McEnroe were the defending champions.  John McEnroe did not participate this year.  Patrick McEnroe partnered Richey Reneberg, losing in the second round. The Billie Jean King Leadership Initiative (BJKLI) is a leadership and diversity Nonprofit organization, founded by Billie Jean King in 2014.  The BJKLI was created to address the critical issues required to achieve inclusive leadership that will lead to significant changes in how women and men operate in the world. "Billie Jean" is a song by American singer Michael Jackson.  It is the second single from the singer's sixth studio album, "Thriller" (1982).  It was written and composed by Jackson and produced by Jackson and Quincy Jones.  There are contradictory claims on the meaning of the song's lyrics.  One suggests that they are derived from a real-life experience, in which a female fan claimed that Jackson (or one of his brothers) had fathered her twins.  However, Michael Jackson stated that "Billie Jean" was based on groupies he had encountered.  The song is well known for its distinctive bassline played by Louis Johnson, the standard drum beat heard in the beginning, the repetition of "Billie Jean is not my lover" towards the end of the song and Michael Jackson's vocal hiccups.  The song was mixed 91 times by audio engineer Bruce Swedien before it was finalized, though he reportedly went with the second mix as the final product. The 1997 Wimbledon Championships was a tennis tournament played on :grass courts at the All England Lawn Tennis and Croquet Club in Wimbledon in London in England.  It was the 111th edition of the Wimbledon Championships and were held from 23 June to 6 July 1997.  The championships saw the inauguration of a new No.1 Court, the third court to be named such in the club's history.  To commemorate the new stadium, all the three-time or more singles champions were invited to a ceremony marking the opening of the new court and were presented with a silver salver.  Ten of the thirteen surviving eligible champions attended: Louise Brough, Rod Laver, Margaret Court, Billie Jean King, John Newcombe, Chris Evert, Martina Navratilova, John McEnroe, Boris Becker and Pete Sampras.  The only surviving absentees were Maria Bueno and Björn Borg who declined to attend and Steffi Graf who was recovering from knee surgery and unable to be present. 100 Greatest of All Time was a television series of five one-hour episodes, produced and first aired by Tennis Channel in March 2012.  It presented a list of the "100 greatest tennis players of all time", both men and women.  The series was hosted by Jack Nicklaus, Jerry Rice, Wayne Gretzky, Lisa Leslie and Carl Lewis.  Many retired tennis luminaries provided commentary, including Rod Laver, Billie Jean King, Chris Evert, Björn Borg, John McEnroe, Martina Navratilova, Pete Sampras, and Andre Agassi. John McEnroe and Patrick McEnroe were the defending champions, but were eliminated in the round-robin stage. John McEnroe and Patrick McEnroe were the defending champions, but Patrick McEnroe did not participate. <br> Patrick John McEnroe (born July 1, 1966) is a former professional tennis player and the former captain of the United States Davis Cup team. Jean Balukas (born June 28, 1959) is an American pool player from Brooklyn, New York, and ranks among the stellar players in the history of the sport.  At least through the 1990s, when Allison Fisher began her ascendancy, Balukas was widely acknowledged as the sole candidate for greatest female player ever.  Described as a "trailblazer, a child prodigy, a loner who rebelled against dress codes for women—the pool equivalent of Billie Jean King", she is a five-time Billiards Congress of America (BCA) Player of the Year, was the youngest inductee into the BCA Hall of Fame and the second woman given the honor, and was ranked fifteenth on "Billiard Digest's" Fifty Greatest Players of the [20th] Century.
Answer: tennis