Kammala jumla mai zuwa: Liess ya cancanci shiga gasar maza na mita 200 a gasar Olympics ta 2012 a London, ta hanyar karya rikodin Switzerland da kuma kare FINA B-cut off lokaci na 1: 58.13 a gasar Olympics ta Olympics ta 2012.
Gasar zakarun Turai a Debrecen, Hungary. Ya kalubalanci wasu 'yan wasa bakwai a zagaye na biyu, ciki har da tsohon dan wasan tsakiya Hsu Chi-chieh na Taipei na kasar Sin. Liess ya kasance a matsayi na karshe ta hanyar 0.16 na biyu a baya na Kanada David Sharpe. Liess ya kasa ci gaba zuwa wasan kusa da na karshe, yayin da ya sanya na talatin da uku a gaba ɗaya a cikin wasan farko.