He represented Bulgaria at the 2016 Summer Paralympics, winning the gold medal in shot put in class F55, and setting a new world record of 12.33 metres (40.5 ft).

[2] During balneotherapy rehabilitation in Pavel Banya, he met Daniela Todorova and her brother and trainer Radoslav Todorov, who recognised his sports talent.

[3] Ruzhdi first major international success came at the 2014 IPC Athletics European Championships where he won the shot put in the F53/54/55 category with a throw of 11.48 metres.

[4][5] In June 2016, at the IPC Athletics European Championships in Grosseto, Italy, Ruzhdi won golden medal in the discus throwing discipline, category F56, with the result of 39.33 metres (129.0 ft), which was 9 centimetres (3.5 in) short of the world record that belonged to another Bulgarian Paralympic athlete Mustafa Yuseinov, who won the bronze in the same event with result of 37.24 metres (122.2 ft).

[7] At the Paralympic games in Rio in 2016, Ruzhdi won the golden medal in shot put, category F55, improving his world record from Grosseto to 12.33 metres (40.5 ft).