Rubuta ci gaba don wannan sakin layi - A shekara ta 2009, IPC ta yanke shawarar mayar da 'yan wasa masu nakasa a shirye-shiryen wasannin Paralympic na 2012 a London. Niewiedział ya dawo cikin manyan wasannin motsa jiki na duniya lokacin da aka zaɓe ta don ƙungiyar Poland a gasar zakarun duniya ta IPC ta 2011
a cikin Christchurch. A can ta yi gasa a tseren mita 1,500, inda ta zo ta biyu ga Meloch. Niewidzial ya bi wannan tare da lambar zinare a cikin mita 1,500 a gasar zakarun Turai ta 2012 IPC Athletics a Stadskanaal kafin ta lashe zinare na biyu na Paralympic a cikin wannan taron a London.