 Nyorai mberi kweiyi ndima - Mukundi wenguva 11 weHungary Athletics Championships mumamita mazana mana, Petráhn akaenzana nehuwandu hwenyika hwehurefu 51.50 masekondi muna 2006, achibatanidza rekodhi raIlona Pál rakagadzwa muna 1980. Akamhanyira kumaOlympics maviri muchiitiko ichi muna 2000 na2008. Mukutora kwake chikamu kwekutanga kumaOlympics ezhizha ra2000 muSydney, Petráhn akazviita kubva padanho rekutanga kusvika kumaquarterfainari, kwaakauya kwekupedzisira mukudziya kwake uye haana kufambira mberi. PaMitambo yeOlympic yeZhizha ya2008muBeijing akauya wechina chete mumutambo wake wokutanga nokudaro haana kukwanisa kuenda kumaquarterfinals. 