| Country (sports) |  Sweden |
|---|---|
| Born | 22 July 1969 |
| Prize money | $50,753 |
| Singles | |
| Career record | 71–78 |
| Career titles | 3 ITF |
| Highest ranking | No. 147 (2 January 1989) |
| Grand Slam singles results | |
| Australian Open | 1R (1989) |
| French Open | 1R (1988) |
| Doubles | |
| Career record | 47–45 |
| Career titles | 2 ITF |
| Highest ranking | No. 184 (1 April 1991) |
| Grand Slam doubles results | |
| Australian Open | 1R (1989) |
Jonna Opitz (born 22 July 1969) is a Swedish former professional tennis player. She played under the name Jonna Jonerup.
Jonerup reached a best singles ranking of 147 in the world competing on the professional tour. [1] In 1988 she was a quarter-finalist at the Taipei Women's Championships and had a win over Jana Novotná at the European Indoors in Zurich. [2]
Between 1988 and 1991, Jonerup featured in four Federation Cup ties for Sweden. She was unbeaten in her three doubles rubbers, with her only loss coming in her sole singles appearance.
She is now known as Jonna Opitz and is an executive for manufacturing company Inwido in Malmö. [3]
| $75,000 tournaments |
| $50,000 tournaments |
| $25,000 tournaments |
| $10,000 tournaments |
| Result | No. | Date | Tournament | Surface | Opponent | Score |
|---|---|---|---|---|---|---|
| Win | 1. | 9 May 1987 | ITF Bournemouth, United Kingdom | Hard |  Sarah Sullivan | 2–6, 6–3, 6–3 |
| Loss | 2. | 27 September 1987 | ITF Šibenik, Yugoslavia | Clay |  Hester Witvoet | 3–6, 0–6 |
| Win | 3. | 7 February 1988 | ITF Stockholm, Sweden | Carpet (i) |  Jennifer Fuchs | 6–4, 6–0 |
| Win | 4. | 13 November 1989 | ITF Telford, United Kingdom | Hard (i) |  Andrea Müller | 2–6, 6–3, 7–5 |
| Result | No. | Date | Tournament | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|
| Loss | 1. | 19 January 1987 | ITF Stockholm, Sweden | Carpet (i) | Maria Strandlund | Catrin Jexell Helena Olsson | 2–6, 3–6 |
| Win | 2. | 2 February 1987 | ITF Hørsholm, Denmark | Carpet (i) | Maria Strandlund | Maria Ekstrand  Lone Vandborg | 6–1, 6–3 |
| Loss | 3. | 21 September 1987 | ITF Šibenik, Yugoslavia | Clay | Maria Strandlund | Yvonne der Kinderen Hester Witvoet | 3–6, 3–6 |
| Loss | 4. | 1 February 1988 | ITF Jönköping, Sweden | Carpet (i) | Maria Strandlund | Jennifer Fuchs Jill Smoller | 2–6, 4–6 |
| Win | 5. | 8 February 1988 | ITF Stavanger, Norway | Carpet (i) | Maria Strandlund |  Sophie Amiach Lisa Bobby | 6–2, 7–6 |
| Loss | 6. | 24 June 1991 | ITF Ronneby, Sweden | Clay | Simone Schilder | Jessica Emmons Maria Lindström | 6–3, 2–6, 4–6 |
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