 Pari gbolohun ti o tẹle: Kleckers kọkọ fa ifojusi ni ọdun 2013 nigbati, ni ọjọ-ori ọdun 17, o gba ipo ti o ga julọ ati iṣẹlẹ olokiki julọ ni Germany nipa fifọ Roman Dietzel 4  2 ni ipari ti German Amateur Championship. Ni awọn ọdun diẹ ti o tẹle o ti ṣere lẹẹmeji ni awọn iyipo igbelewọn fun Idije Agbaye, o padanu 106 si Noppon Saengkham ni ọdun 2015 ati 107 si Rory McLeod ni ọdun 2015. : Ọdún 2016. Ni 2015 Riga Open o gba ife-idije ninu idije European Tour fun igba akọkọ nipa fifọ Anthony Hamilton 40, ṣaaju ki o to padanu 40 si Stephen Maguire. 