Rubuta ci gaba don wannan sakin layi - Wellen ya buga dukkan aikinsa tare da ƙungiyar garinsa ta Krefelder EV 1936, yanzu ana kiranta da Krefeld Pinguine. Ya kuma zama kocin kungiyar a shekarar 1978. Wellen ya taka leda a gasar zakarun duniya ta 1961
don Jamus ta Yamma.