Pedzisa mutsara unotevera: Pakutanga kwa2000, Siscovich akatora chikamu mumitambo yekukodzera yeSydney 2000, achibatsira Croatia kuti ikodzere kuenda kumitambo yeOlympic yezhizha. Akapedza ari wechinomwe neCroatia mu
2000 mutambo wevakadzi weOlympic wevolleyball. Siscovich akatambawo kuCroatia ku2001 European Championship muBulgaria.