Diana Koleva
Diana Khristova Koleva-Tsvetanova is a former Bulgarian badminton player. She competed in three consecutive Summer Olympics in 1992 Barcelona, 1996 Atlanta, and 2000 Sydney. Koleva won sixteen times National Championships title from 1985 to 2003. She also won the women's singles title at the 1988/89 season of European Circuit.
Achievements
BWF International Challenge/Series
Women's singles| Year | Tournament | Opponent | Score | Result |
| 1994 | Lausanne International |  Brenda Conijn | 4–11, 11–7, 12–10 | Winner |
| 1990 | Malta International |  Mira Sundari | 7–11, 7–11 | Runner-up |
| 1990 | La Chaux-de-Fonds International |  Bettina Villars | 11–2, 12–9 | Runner-up |
| 1989 | Malta International |  Neli Boteva | 11–3, 11–2 | Winner |
| 1987 | Bulgarian International |  Monika Cassens | Runner-up | |
| 1986 | Austrian International | Birgit Schilling | Winner |
Women's doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 2000 | Greece International |  Petya Nedelcheva | Maya Ivanova Dobrinka Smilianova | 15–7, 15–7 | Winner |
| 2000 | Croatian International | Neli Boteva |  Felicity Gallup Joanne Muggeridge | 6–15, 15–12, 5–15 | Runner-up |
| 1999 | Le Volant d'Or de Toulouse | Neli Boteva | Nicol Pitro Anika Sietz | 15–11, 14–17, 10–15 | Runner-up |
| 1999 | Romanian International | Neli Boteva | Petya Nedelcheva Raina Tzvetkova | 12–15, 15–12, 15–3 | Winner |
| 1999 | Bulgarian International | Neli Boteva |  Natalja Esipenko Natalia Golovkina | 13–15, 17–15, 15–0 | Winner |
| 1998 | Israel International |  Svetlana Zilberman |  Elena Iasonos Diana Knekna | 15–1, 15–2 | Winner |
| 1998 | Cyprus International | Raina Tzvetkova | Elena Iasonos Diana Knekna | 15–3, 15–7 | Winner |
| 1998 | Romanian International | Raina Tzvetkova |  Carmen Blanaru Alina Pitu | 15–3, 15–4 | Winner |
| 1998 | French Open | Neli Boteva |  Tsai Hui-min Chen Li-chin | 6–15, 9–15 | Runner-up |
| 1996 | Le Volant d'Or de Toulouse | Neli Boteva |  Sandrine Lefèvre Tatiana Vattier | 15–5, 15–4 | Winner |
| 1995 | Bulgarian International | Neli Boteva | Silvia Albrecht Santi Wibowo | 15–7, 15–5 | Winner |
| 1994 | Czech International | Neli Boteva |  Lone Sørensen Mette Sørensen | 14–17, 11–15 | Runner-up |
| 1992 | Malta International | Diana Knekna | Neli Boteva Emilia Dimitrova | 15–10, 18–15 | Winner |
| 1990 | Bulgarian International | Helene Kirkegaard | Katrin Schmidt Kerstin Ubben | 15–7, 15–3 | Winner |
| 1990 | Malta International | Emilia Dimitrova | Monika Cassens Petra Michalowsky | 10–15, 5–15 | Runner-up |
| 1990 | La Chaux-de-Fonds International | Emilia Dimitrova | Monika Cassens Petra Michalowsky | 6–15, 9–15 | Runner-up |
| 1989 | Bulgarian International |  Vlada Chernyavskaya |  Lin Yanfen Zhang Wanling | 6–15, 4–15 | Runner-up |
| 1989 | Malta International | Emilia Dimitrova |  Andrea Roschinsky S. Rotermund | 15–5, 15–4 | Winner |
| 1987 | Bulgarian International | Diana Filipova | Monika Cassens Petra Michalowsky | Runner-up |
Mixed doubles
| Year | Tournament | Partner | Opponent | Score | Result |
| 1999 | Israel International | Luben Panov | Leon Pugach Rina Fridman | 15–8, 10–15, 15–5 | Winner |
| 1998 | Cyprus International | Konstantin Dobrev | Leon Pugach Rina Fridman | 15–3, 10–15, 15–3 | Winner |
| 1998 | Romanian International | Konstantin Dobrev | Florin Posteucă Adina Posteucă | 15–11, 15–2 | Winner |
| 1996 | Le Volant d'Or de Toulouse | Svetoslav Stoyanov | Manuel Dubrulle Sandrine Lefèvre | 15–10, 15–3 | Winner |
| 1994 | Lausanne International |  Pavel Uvarov | James Anderson Emma Constable | 2–15, 16–17 | Runner-up |
| 1990 | Irish International | Kai Abraham | Michael Keck Irina Serova | 10–15, 7–15 | Runner-up |
| 1990 | Austrian International | Nikolai Zuyev | Christian Jakobsen Marlene Thomsen | Runner-up | |
| 1989 | Malta International | Orlin Tzvetanov | Vladimir Balun Emilia Dimitrova | 11–15, 8–15 | Runner-up |
| 1988 | Austrian International | Markus Keck |  Jerzy Dołhan Bożena Haracz | Runner-up |