<prompt> Igor Anatolievich Potyakin ; akaberekwa 14 September 1955 ari pamudyandigere Russian backstroke mutambi uyo akahwina menduru yendarira muna 4 × 100 m medley relay pa 1974 European Aquatics Championships  <response>: . Munguva yebasa rake akahwina mikombe mitanhatu yenyika mumamita zana 1973-1976 uye mazana maviri emamita kumusana 1974 uye 4 × 100 m medley relay 1974. 