 Nyora kupfuurira kweiyi ndima - Mumwaka wa2009-10 Petrov akaunza kumba menduru yesirivheri mumutambo wevatangi vepamberi pa2010 Toruń Cup uye akapedza achinyara menduru paRostelecom Crystal Skate. Mwaka wakatevera, Petrov akahwina goridhe pa2011 Toruń Cup, menduru yake yekutanga yegoridhe yepasi rose. Mumwaka wa2011-12, akahwina mutambo wekutanga pa2011 NRW Trophy muDortmund, Germany uye akapedza wechipiri mumutambo wechidiki kuRostelecom Crystal Skate. Kutanga kwake pa2012 Russian Junior Championships, akapedza ari wechi12. 