Nadieżda Zięba

Nadieżda "Nadia" Zięba (born 21 May 1984) is a Polish retired badminton player of Belarusian origin. She won the mixed doubles gold medal at the 2012 European Championships. Zięba was three times mixed doubles quarter finalists in the badminton at the Summer Olympics.

Career
Kostiuczyk played the 2007 BWF World Championships in mixed doubles with Robert Mateusiak. They were defeated in quarterfinals by Zheng Bo and Gao Ling of China, 16–21, 17–21. She also played women's doubles with Kamila Augustyn and lost in the first round. They won the silver medal at the 2008 European Championships. At the Belarusian National Badminton Championships she won 7 titles.

European Championships
Mixed doubles

European Junior Championships
Girls' doubles

BWF Superseries
The BWF Superseries, which was launched on 14 December 2006 and implemented in 2007, was a series of elite badminton tournaments, sanctioned by the Badminton World Federation (BWF). BWF Superseries levels were Superseries and Superseries Premier. A season of Superseries consisted of twelve tournaments around the world that had been introduced since 2011. Successful players were invited to the Superseries Finals, which were held at the end of each year.

Mixed doubles
 * BWF Superseries Finals tournament
 * BWF Superseries Premier tournament
 * BWF Superseries tournament

BWF Grand Prix
The BWF Grand Prix had two levels, the Grand Prix and Grand Prix Gold. It was a series of badminton tournaments sanctioned by the Badminton World Federation (BWF) and played between 2007 and 2017. The World Badminton Grand Prix was sanctioned by the International Badminton Federation from 1983 to 2006.

Women's doubles

Mixed doubles
 * BWF Grand Prix Gold tournament
 * BWF & IBF Grand Prix tournament

BWF International Challenge/Series
Women's singles

Women's doubles

Mixed doubles
 * BWF International Challenge tournament
 * BWF International Series tournament
 * BWF Future Series tournament

Record against selected opponents
Mixed doubles results with Robert Mateusiak against year-end Finals finalists, World Championships semi-finalists, and Olympic quarter-finalists.