 Complete the following phrase:  In the 200910 season Petrov brought home the silver medal in the novice event at the 2010 Toruń Cup and finished just shy of a medal at Rostelecom Crystal Skate. The following season, Petrov won gold at the 2011 Toruń Cup, his first international gold medal. In the 2011-12 season, he won the novice event at the 2011 NRW Trophy in Dortmund, Germany and finished second in the junior event at Rostelecom Crystal Skate. Making his debut at the 