<prompt> Qedela umusho olandelayo: UKonstantin Yuryevich Petrov ; owazalwa ngo-16 Januwari 1964 ungumdlali wasemanzini waseKazakhstan osethathe umhlalaphansi. Wathola indondo yethusi kuma-Olympic asehlobo ka-1988 nendondo yegolide kuma-  <response>: Ngo-1987 i-European Aquatics Championships emncintiswaneni we-4 × 100 m medley relay. 