Jason Stoltenberg
Jason Stoltenberg is an Australian former professional tennis player.
Tennis career
Stoltenberg began playing tennis at age ten on an antbed court where his father owned a cotton farm in the Far West of New South Wales. He was an Australian Institute of Sport scholarship holder.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.
Coaching career
Stoltenberg was the coach of Lleyton Hewitt from December 2001 until June 2003. He resigned as Hewitt's coach after Hewitt lost to Tommy Robredo at the 2003 French Open.ATP Career finals
Singles finals: 13 (4 titles , 9 runner-ups)
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Runner-up | 1. | 13 August 1989 | Livingston | Hard |  Brad Gilbert | 4–6, 4–6 |
| Winner | 1. | 21 June 1993 | Manchester | Grass |  Wally Masur | 6–1, 6–3 |
| Winner | 2. | 18 April 1994 | Birmingham | Clay |  Gabriel Markus | 6–3, 6–4 |
| Runner-up | 2. | 24 July 1994 | Washington | Hard |  Stefan Edberg | 4–6, 2–6 |
| Runner-up | 3. | 31 July 1994 | Toronto | Hard | Andre Agassi | 4–6, 4–6 |
| Winner | 3. | 20 May 1996 | Coral Springs | Clay | Chris Woodruff | 7–6, 2–6, 7–5 |
| Runner-up | 4. | 4 May 1997 | Atlanta | Clay |  Marcelo Filippini | 6–7, 4–6 |
| Winner | 4. | 12 May 1997 | Coral Springs | Clay | Jonas Björkman | 6–0, 2–6, 7–5 |
| Runner-up | 5. | 11 January 1998 | Adelaide | Hard | Lleyton Hewitt | 6–3, 3–6, 6–7 |
| Runner-up | 6. | 8 March 1998 | Scottsdale | Hard | Andre Agassi | 4–6, 6–7 |
| Runner-up | 7. | 3 May 1998 | Atlanta | Clay | Pete Sampras | 7–6, 3–6, 6–7 |
| Runner-up | 8. | 16 January 2000 | Sydney | Hard | Lleyton Hewitt | 4–6, 0–6 |
| Runner-up | 9. | 16 April 2000 | Atlanta | Clay | Andrew Ilie | 3–6, 5–7 |
Doubles finals: 11 (5–6)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
| Runner-up | 1. | 17 April 1988 | Madrid | Clay | Todd Woodbridge |  Sergio Casal Emilio Sánchez | 7–6, 6–7, 3–6 |
| Runner-up | 2. | 22 April 1990 | Seoul | Hardcourt | Todd Woodbridge |  Grant Connell Glenn Michibata | 6–7, 4–6 |
| Winner | 1. | 6 May 1990 | Singapore | Hardcourt | Mark Kratzmann | Brad Drewett Todd Woodbridge | 6–1, 6–0 |
| Winner | 2. | 24 June 1990 | Manchester | Grass | Mark Kratzmann |  Nick Brown Kelly Jones | 6–3, 2–6, 6–4 |
| Winner | 3. | 30 September 1990 | Brisbane | Hardcourt | Todd Woodbridge | Brian Garrow Mark Woodforde | 2–6, 6–4, 6–4 |
| Winner | 4. | 10 February 1991 | San Francisco | Carpet | Wally Masur | Ronnie Båthman Rikard Bergh | 4–6, 7–6, 6–4 |
| Runner-up | 3. | 5 January 1992 | Adelaide | Hardcourt | Mark Kratzmann |  Goran Ivanišević  Marc Rosset | 6–7, 6–7 |
| Winner | 5. | 17 January 1993 | Sydney | Hardcourt | Sandon Stolle | Luke Jensen Murphy Jensen | 6–3, 6–4 |
| Runner-up | 4. | 18 April 1993 | Hong Kong | Hardcourt | Sandon Stolle | David Wheaton Todd Woodbridge | 1–6, 3–6 |
| Runner-up | 5. | 23 April 1995 | Bermuda | Clay |  Brett Steven | Grant Connell Todd Martin | 6–7, 6–2, 5–7 |
| Runner-up | 6. | 12 July 1998 | Newport | Harcourt | Scott Draper | Doug Flach Sandon Stolle | 2–6, 6–4, 6–7 |