Jacco Eltingh and Paul Haarhuis were the defending champions, but Eltingh retired from the sport on November 22, 1998, and only Haarhuis competed that year.
Roy Emerson and Fred Stolle were the defending champions but only Roy Emerson did compete this year.
Paul Haarhuis and Mark Koevermans were the defending champions, but did not participate together this year.
 Haarhuis did not participate this year.
 Koevermans partnered David Rikl, losing in the first round.
Jacco Eltingh and Paul Haarhuis were the defending champions, but Eltingh did not compete this year.
 Haarhuis competed with American Jared Palmer as the seventh seed, but they were eliminated in the second round by Javier Sánchez and Jan Siemerink.
Jacco Eltingh and Paul Haarhuis were the defending champions but only Haarhuis competed that year with Sjeng Schalken.
Hendrik Jan Davids and Paul Haarhuis were the defending champions, but Haarhuis did not participate this year.
 Davids partnered Ģirts Dzelde, losing in the first round.
Paul Haarhuis and Cédric Pioline were the defending champion, but Haarhuis did not play this year.Pioline partnered up with Arnaud Boetsch, but they were eliminated by Goran Ivanišević and Michael Stich in the round-robin stage.
Yevgeny Kafelnikov and Andriy Medvedev won in the final 6–1, 6–1 against Ivanisevic and Stich.
Roy Emerson Arena is a tennis stadium located in Gstaad, Switzerland.
 The stadium is the centerpiece of the Suisse Open Gstaad, an ATP Tour event.
 The stadium has a capacity of 4,500 spectators.
 It is named in honor of Roy Emerson, 12-time Grand Slam champion, and five-time winner of the Gstaad tournament.
Paul Vincent Nicholas Haarhuis (born 19 February 1966) is a Dutch former professional tennis player.
 He is a former World No. 1 doubles player and reached a career-high singles ranking of World No. 18 in November 1995.
 He won six Grand Slam men's doubles titles, five with Jacco Eltingh and one with Yevgeny Kafelnikov.
Roy Stanley Emerson (born 3 November 1936) is an Australian former World number one tennis player who won 12 Major singles titles and 16 Grand Slam tournament men's doubles titles.
 He is the only male player to have completed a Career Grand Slam (winning titles at all four Grand Slam events) in both singles and doubles.
 His 28 major titles are an all-time record for a male amateur player.
 Emerson is the first male player to win each amateur major title at least twice in his career.
 He is one of only eight men to win all four majors in his career.
 He was the first male player to win 12 majors.
 Along with Novak Djokovic, he is one of only two male players to win six Australian Championships.
 He won five of them consecutively (1963–67).
 His 12 wins have since been surpassed.
 Emerson is one of only five tennis players all-time to win multiple slam sets in two disciplines, only matched by Margaret Court, Martina Navratilova, Frank Sedgman and Serena Williams.

Question: Did Roy Emerson and Paul Haarhuis play the same sport?
Answer: yes