At the 2011 European Fencing Championships in Sheffield, United Kingdom, he placed seventh in the individual foil. The same year he finished 44th in the individual event at the World Championships. At the 2013 World Championships he finished 39th. He competed at the 2013 Summer Universiade games held in Kazan, Russia. In the individual foil he defeated Noriyuki Nagashima of Japan 15–13 in the round of 64 and then Italy's Tobia Biondo 15–13 in the last 32, before being eliminated in the round of 16 after an 11–15 defeat to Italian Daniele Garozzo. Pranz placed 28th in the individual foil at the 2014 World Fencing Championships and was 55th at the 2015 championships.