Answer
Petrosyan started competing for K-1 in 2008, and he was able to win his first match against Ruslan Karaev. He went on to win the K-1 World Grand Prix in 2009, and he has also won the K-1 World Max tournament twice. Petrosyan is considered to be one of the best kickboxers in the world, and he is a favorite to win the K-1 World Grand Prix in 2016.