Fajdek continued to improve in 2011, finishing second at the European Team Championships in Stockholm with a new personal best of 76.98 metres. He improved further to 78.13 at Madrid, beating among others the reigning Olympic Champion, Primož Kozmus of Slovenia. He was an overwhelming winner at the European U23 Championships in Ostrava, Czech Republic, beating second placer Javier Cienfuegos by five and a half metres to record yet another personal best of 78.54. He also dominated his speciality at the World University Games in Shenzhen, winning the gold with 78.14, more than four metres ahead of silver medallist Marcel Lomnický; a week later at the World Championships in Daegu, however, he only managed 75.20 and finished eleventh.