The 1998 ATP Super 9 (also known as Mercedes-Benz Super 9 for sponsorship reasons) were part of the 1998 ATP Tour, the elite tour for professional men's tennis organised by the Association of Tennis Professionals.

Masters	Singles champions	Runners-up	Score	Doubles champions	Runners-up	Score
Indian Wells Singles – Doubles	Marcelo Ríos	Greg Rusedski	6–3, 6–7(15–17), 7–6(7–4), 6–4	Jonas Björkman*	Todd Martin Richey Reneberg	6–0, 6–3
				Patrick Rafter
Miami Singles – Doubles	Marcelo Ríos	Andre Agassi	7–5, 6–3, 6–4	Ellis Ferreira Rick Leach	Alex O'Brien Jonathan Stark	6–2, 6–4
Monte Carlo Singles – Doubles	Carlos Moyà	Cédric Pioline	6–3, 6–0, 7–5	Jacco Eltingh Paul Haarhuis	Todd Woodbridge Mark Woodforde	6–4, 6–2
Hamburg Singles – Doubles	Albert Costa	Àlex Corretja	6–2, 6–0, 1–0 ret.	Donald Johnson Francisco Montana	David Adams Brett Steven	6–4, 6–4
Rome Singles – Doubles	Marcelo Ríos	Albert Costa	W/O	Mahesh Bhupathi Leander Paes	Ellis Ferreira Rick Leach	6–4, 4–6, 7–6
Toronto Singles – Doubles	Patrick Rafter	Richard Krajicek	7–6(7–3), 6–4	Martin Damm*	Ellis Ferreira Rick Leach	6–7, 6–2 7–6
				Jim Grabb
Cincinnati Singles – Doubles	Patrick Rafter	Pete Sampras	1–6, 7–6(7–2), 6–4	Mark Knowles Daniel Nestor	Olivier Delaître Fabrice Santoro	6–7, 6–4, 6–4
Stuttgart Singles – Doubles	Richard Krajicek	Yevgeny Kafelnikov	6–4, 6–3, 6–3	Sébastien Lareau Alex O'Brien	Mahesh Bhupathi Leander Paes	4–6, 6–3, 7–5
Paris Singles – Doubles	Greg Rusedski	Pete Sampras	6–4, 7–6(7–4), 6–3	Mahesh Bhupathi Leander Paes	Jacco Eltingh Paul Haarhuis	7–6, 7–6

#	Player	IN	MI	MO	HA	RO	CA	CI	ST	PA	#	Winning span
	Andre Agassi	-	3	-	-	-	3	2	-	1	9	1990–1996 (7)
	Pete Sampras	2	2	-	-	1	-	2	-	2	9	1992–1997 (6)
	Thomas Muster	-	1	3	-	3	-	-	1	-	8	1990–1997 (8)
	Michael Chang	3	1	-	-	-	1	2	-	-	7	1990–1997 (8)
	Jim Courier	2	1	-	-	2	-	-	-	-	5	1991–1993 (3)
	Boris Becker	-	-	-	-	-	-	-	4	1	5	1990–1996 (7)
	Stefan Edberg	1	-	-	1	-	-	1	-	1	4	1990–1992 (3)
	Andrei Medvedev	-	-	1	3	-	-	-	-	-	4	1994–1997 (4)
	Marcelo Ríos	1	1	1	-	1	-	-	-	-	4	1997–1998 (2)
	Sergi Bruguera	-	-	2	-	-	-	-	-	-	2	1991–1993 (3)
	Andrei Chesnokov	-	-	1	-	-	1	-	-	-	2	1990–1991 (2)
	Guy Forget	-	-	-	-	-	-	1	-	1	2	1991
	Goran Ivanišević	-	-	-	-	-	-	-	1	1	2	1992–1993 (2)
	Patrick Rafter	-	-	-	-	-	1	1	-	-	2	1998
	Michael Stich	-	-	-	1	-	-	-	1	-	2	1993
	Juan Aguilera	-	-	-	1	-	-	-	-	-	1	1990
	Àlex Corretja	-	-	-	-	1	-	-	-	-	1	1997
	Albert Costa	-	-	-	1	-	-	-	-	-	1	1998
	Roberto Carretero	-	-	-	1	-	-	-	-	-	1	1996
	Thomas Enqvist	-	-	-	-	-	-	-	-	1	1	1996
	Wayne Ferreira	-	-	-	-	-	1	-	-	-	1	1996
	Petr Korda	-	-	-	-	-	-	-	1	-	1	1997
	Richard Krajicek	-	-	-	-	-	-	-	1	-	1	1998
	Carlos Moyá	-	-	1	-	-	1	-	-	-	1	1998
	Karel Nováček	-	-	-	1	-	-	-	-	-	1	1991
	Mikael Pernfors	-	-	-	-	-	1	-	-	-	1	1993
	Greg Rusedski	-	-	-	-	-	-	-	-	1	1	1998
	Emilio Sánchez	-	-	-	-	1	-	-	-	-	1	1991
	Chris Woodruff	-	-	-	-	-	1	-	-	-	1	1997
#	Player	IN	MI	MO	HA	RO	CA	CI	ST	PA	#	Winning span

• ATP Tour Masters 1000
• 1998 ATP Tour
• 1998 WTA Tier I Series
• 1998 WTA Tour

• Association of Tennis Professionals (ATP) official website