At the 2014 Winter Olympics in Sochi, Tretiakov won three out of four runs, established track (55.95) and start (4.47) records, and became the champion ahead of Martins Dukurs, who was universally considered to be the strongest gold medal contender. This was the first gold medal in skeleton for Russia. To sleep well before the second day of the competitions, Tretiakov downloaded on his cell phone the series of Russian Wikipedia articles on the economy of the Tsardom of Russia and fell asleep while reading them.
Alexander Tretiakov resides in Krasnoyarsk, Russia. His wife Anastasia is a former skeleton rider. Their daughter was born in 2013.