Juniors

In 1987, he won the Boys' Singles title at the Australian Open and was ranked the No. 1 junior player in the world. He turned professional later that year.

Pro tour

Stoltenberg reached his first tour singles final in 1989 at Livingston, New Jersey and won his first top-level title in 1993 at Manchester. He was also part of the Australian team which finished runners-up in that year's Davis Cup, losing in the final to Germany.

Stoltenberg's best performance at a Grand Slam event came in 1996, when he reached the semi-finals at Wimbledon, defeating Adrian Voinea, Jiří Novák, Mosé Navarra, Jakob Hlasek and Goran Ivanišević in the quarter-finals, before being knocked-out by eventual champion Richard Krajicek.

During his career, Stoltenberg won four top-level singles titles and five doubles titles. His career-high rankings were World No. 19 in singles and No. 23 in doubles. His career prize money totalled US$3,305,212. His last singles title came in 1997 at Coral Springs, Florida. He retired from the professional tour in 2001.

Singles: 13 (4 titles, 9 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Aug 1989	Livingston, United States	Grand Prix	Hard	Brad Gilbert	4–6, 4–6
Win	1–1	Jun 1993	Manchester, United Kingdom	World Series	Grass	Wally Masur	6–1, 6–3
Win	2–1	Apr 1994	Birmingham, United States	World Series	Clay	Gabriel Markus	6–3, 6–4
Loss	2–2	Jul 1994	Washington, United States	Championship Series	Hard	Stefan Edberg	4–6, 2–6
Loss	2–3	Jul 1994	Toronto, Canada	Masters Series	Hard	Andre Agassi	4–6, 4–6
Win	3–3	May 1996	Coral Springs, United States	World Series	Clay	Chris Woodruff	7–6(7–4), 2–6, 7–5
Loss	3–4	May 1997	Atlanta, United States	World Series	Clay	Marcelo Filippini	6–7(2–7), 4–6
Win	4–4	May 1997	Coral Springs, United States	World Series	Clay	Jonas Björkman	6–0, 2–6, 7–5
Loss	4–5	Jan 1998	Adelaide, Australia	World Series	Hard	Lleyton Hewitt	6–3, 3–6, 6–7(4–7)
Loss	4–6	Mar 1998	Scottsdale, United States	World Series	Hard	Andre Agassi	4–6, 6–7(3–7)
Loss	4–7	May 1998	Atlanta, United States	World Series	Clay	Pete Sampras	7–6(7–2), 3–6, 6–7(4–7)
Loss	4–8	Jan 2000	Sydney, Australia	International Series	Hard	Lleyton Hewitt	4–6, 0–6
Loss	4–9	Apr 2000	Atlanta, United States	International Series	Clay	Andrew Ilie	3–6, 5–7

Doubles: 11 (5 titles, 6 runner-ups)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Apr 1988	Madrid, Spain	Grand Prix	Clay	Todd Woodbridge	Sergio Casal Emilio Sanchez	7–6, 6–7, 4–6
Loss	0–2	Apr 1990	Seoul, South Korea	World Series	Hard	Todd Woodbridge	Grant Connell Glenn Michibata	6–7, 4–6
Win	1–2	May 1990	Singapore, Singapore	World Series	Hard	Mark Kratzmann	Brad Drewett Todd Woodbridge	6–1, 6–0
Win	2–2	Jun 1990	Manchester, United Kingdom	World Series	Grass	Mark Kratzmann	Nick Brown Kelly Jones	6–3, 2–6, 6–4
Win	3–2	Sep 1990	Brisbane, Australia	World Series	Hard	Todd Woodbridge	Brian Garrow Mark Woodforde	2–6, 6–4, 6–4
Win	4–2	Feb 1991	San Francisco, United States	World Series	Carpet	Wally Masur	Ronnie Båthman Rikard Bergh	4–6, 7–6, 6–4
Loss	4–3	Jan 1992	Adelaide, Australia	World Series	Hard	Mark Kratzmann	Goran Ivanisevic Marc Rosset	6–7, 6–7
Win	5–3	Jan 1993	Sydney, Australia	World Series	Hard	Sandon Stolle	Luke Jensen Murphy Jensen	6–3, 6–4
Loss	5–4	Apr 1993	Hong Kong, Hong Kong	World Series	Hard	Sandon Stolle	David Wheaton Todd Woodbridge	1–6, 3–6
Loss	5–5	Apr 1995	Paget, Bermuda	World Series	Clay	Brett Steven	Grant Connell Todd Martin	6–7, 6–2, 5–7
Loss	5–6	Jul 1998	Newport, United States	World Series	Grass	Scott Draper	Doug Flach Sandon Stolle	2–6, 6–4, 6–7

Singles: 3 (3–0)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Win	1–0	Feb 1993	Indian Wells, United States	Challenger	Hard	Jared Palmer	6–2, 6–1
Win	2–0	May 1993	Taipei, Taiwan	Challenger	Hard	Richard Matuszewski	6–0, 6–3
Win	3–0	Mar 1996	Indian Wells, United States	Challenger	Hard	Mark Knowles	6–4, 6–2

Doubles: 3 (1–2)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Apr 1991	Taipei, Taiwan	Challenger	Hard	Mark Kratzmann	Kelly Jones Todd Woodbridge	6–7, 3–6
Win	1–1	Feb 1993	Indian Wells, United States	Challenger	Hard	Patrick Rafter	Neil Borwick Simon Youl	6–4, 6–3
Loss	1–2	Mar 1996	Indian Wells, United States	Challenger	Hard	Peter Tramacchi	Brett Hansen-Dent Brian Macphie	3–6, 4–6

Singles: 3 (1 title, 2 runner-ups)

Result	Year	Tournament	Surface	Opponent	Score
Win	1987	Australian Open	Hard	Todd Woodbridge	6–2, 7–6
Loss	1987	French Open	Clay	Guillermo Perez-Roldan	3–6, 6–3, 2–6
Loss	1987	Wimbledon	Grass	Diego Nargiso	6–7, 4–6

Doubles: 5 (5 titles)

Result	Year	Tournament	Surface	Partnet	Opponents	Score
Win	1987	Australian Open	Hard	Todd Woodbridge	Shane Barr Bryan Roe	6–2, 6–4
Win	1987	Wimbledon	Grass	Todd Woodbridge	Diego Nargiso Eugenio Rossi	6–3, 7–6(7–2)
Win	1988	Australian Open	Hard	Todd Woodbridge	Johan Anderson Richard Fromberg	6–3, 6–2
Win	1988	French Open	Clay	Todd Woodbridge	Cristiano Caratti Goran Ivanisevic	7–6, 7–5
Win	1988	Wimbledon	Grass	Todd Woodbridge	David Rikl Tomas Zdrazila	6–4, 1–6, 7–5

Singles

Doubles

Mixed doubles