Georg Preidler charged with fraud after admitting involvement in Operation Aderlass blood doping ring Sep 19, 2019 Georg Preidler quit his team after admitting to having his blood extracted (Photo: Yuzuru SUNADA) Georg Preidler has been charged with professional fraud over his involvement in the Operation Aderlass doping ring. Tags: Doping General News News Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus