She finished tenth at the 2005 Summer Universiade, won the 2007 Summer Universiade and finished fourth at the 2008 Olympic Games. In addition she competed at the 2005 World Championships without reaching the final. She had a strong start to the 2010 season after throwing 75.42 m to win at the Grande Prêmio Caixa Governo do Pará in May.
On 12 January 2017 it was announced that because of a doping violation she had been disqualified from the 2008 Olympic Games.
|2005||World Championships||Helsinki, Finland||15th (q)||65.54 m|
|Universiade||Izmir, Turkey||10th||63.89 m|
|2007||Universiade||Bangkok, Thailand||1st||68.74 m|
|2008||Olympic Games||Beijing, China||DSQ||73.65 m|
|2009||World Championships||Berlin, Germany||DSQ||69.30 m|
|World Athletics Final||Thessaloniki, Greece||DSQ||69.00 m|
|2010||European Championships||Barcelona, Spain||DSQ||NM|
- Biscayart, Eduardo (2010-05-21). Pchelnik throws Hammer to 75.42m in Belém. IAAF. Retrieved on 2010-06-09.
- "IOC sanctions eight athletes for failing anti-doping test at Beijing 2008 and London 2012". IOC. Retrieved 12 January 2017.
- Darya Pchelnik at World Athletics
- Evans, Hilary; Gjerde, Arild; Heijmans, Jeroen; Mallon, Bill; et al. "Darya Pchelnik". Olympics at Sports-Reference.com. Sports Reference LLC. Archived from the original on 2012-01-14.