▁Er ich ▁Z eller . ▁ ▁As ▁a ▁single ▁sk ater , ▁K etter er ▁won ▁the ▁ 1 9 6 9 ▁German ▁Figure ▁Sk ating ▁Championships . ▁He ▁switched ▁to ▁pair ▁sk ating ▁in ▁ 1 9 6 8 , ▁inspired ▁by ▁Al mut ▁Le h mann . ▁ ▁Le h mann ▁& ▁K etter er ▁won ▁the ▁nov ice ▁bronze ▁medal ▁at ▁the ▁ 1 9 6 9 ▁German ▁Championships . ▁ ▁In ▁ 1 9 7 1 ▁the ▁pair ▁Claud ia ▁Z ander / Re in hard ▁K etter er ▁won ▁the ▁junior ▁gold ▁medal ▁at ▁the ▁German ▁champion ships . ▁Three ▁years ▁later , ▁K etter er ▁won ▁the ▁bronze ▁medal ▁at ▁the ▁ 1 9 7 2 ▁German ▁Figure ▁Sk ating ▁Championships ▁with ▁partner ▁Gab rie le ▁C ie p lik . ▁ ▁He ▁retired ▁from ▁compet itive ▁sk ating ▁that ▁year . ▁He ▁focused ▁on ▁his ▁professional ▁education ▁and ▁career . ▁The ▁following ▁years ▁he ▁appeared ▁in ▁over ▁ 6 0 0 ▁figure ▁sk ating ▁shows . ▁ ▁From ▁ 1 9 7 2 ▁to ▁ 1 9 7 3 , ▁K etter er ▁studied ▁at ▁the ▁German ▁Sport ▁University ▁C ologne ▁to ▁become ▁an ▁independent ▁teacher ▁for ▁sport . ▁From ▁ 1 9 7 4 ▁to ▁ 1 9 7 8 , ▁he ▁passed ▁the ▁Ab it ur ▁at ▁the ▁" G ymnasium ▁and ▁Kol leg ▁Sank t ▁Matth ias " ▁in ▁Wol fr at sh aus en . ▁From ▁ 1 9 7 9 ▁to