Sergey Karjakin is an elite chess player who became the youngest-ever GM at 12 years and seven months of age. Most notably, he pushed Magnus Carlsen—typically considered one of the two greatest chess players of all time (along with Garry Kasparov)—to tiebreakers in the 2016 World Chess Championship. Karjakin nearly won the most prestigious title in chess to go along with two world titles in rapid (2012) and blitz (2016) that came at the expense of the world champion. Source: Chess.com