Udo Riglewski and Michael Stich were the defending champions of the doubles event at the CA-TennisTrophy tennis tournament but lost in the semifinals to Jakob Hlasek and Patrick McEnroe.
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.
John McEnroe and Patrick McEnroe were the defending champions, but were eliminated in the round-robin stage.
Guy Forget and Henri Leconte were the defending champions but lost the final to John McEnroe and Patrick McEnroe, 7–6, 6–3.
Andrés Gómez and Mark Woodforde were the defending champions, but lost to John and Patrick McEnroe in the final, 6–4, 5–7, [7–10].
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.
John McEnroe and Patrick McEnroe were the defending champions, but Patrick McEnroe did not participate.
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John Patrick McEnroe Jr. (born February 16, 1959) is a retired American tennis player, often considered among the greatest in the history of the sport.
 He was known for his shot-making artistry and volleying skills, as well as his confrontational on-court behavior that frequently landed him in trouble with umpires and tennis authorities.
John McEnroe and Mark Woodforde were the defending champions but only Woodforde competed that year with Patrick McEnroe.
Patrick John McEnroe (born July 1, 1966) is a former professional tennis player and the former captain of the United States Davis Cup team.

Question: What sport did Both Patrick McEnroe and Mike Bryan both play?
Answer: tennis