Georg Preidler spared jail after admitting involvement in Operation Aderlass blood doping ring Jul 22, 2020 Georg Preidler quit his team after admitting to having his blood extracted (Photo: Yuzuru SUNADA) Georg Preidler has been spared jail after admitting his involvement in the Operation Aderlass blood doping ring. Tags: Doping General News News Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus