<prompt> Pedzisa mutsara unotevera: Diener akahwina mukombe wake wekutanga wepasi rose paEuropean Junior Championships 2010 mu50m backstroke. Gore rimwe gare gare, muna 2011, akadzivirira menduru yake yegoridhe uye akakundawo mu100m uye 200m kumashure kuEuropean Junior Championships muBelgrade Serbia uye akahwina menduru yegoridhe kuWorld Junior Championships muLima Peru mu50m kumashure. Christian Diener akahwina sirivha mumakwikwi e50m kumusana paEuropean Short Course Swimming Championships 2013 uye  <response>: 2014 paEuropean Aquatics Championships. Akanga ari nhengo yechikwata cheGerman kumaOlympics ezhizha ra2016 muRio de Janeiro uye akakwikwidza mumakwikwi e200m kumashure, achipedza 7th. 