He was part of the Russian 4 × 100 m freestyle relay teams that finished in ninth and third place at the 2008 and 2012 Olympics, respectively.

[1] In spring 2020, Fesikov signed for the Toronto Titans, the first Canadian based team in the ISL.

2018: Fesikov took home two silver medals from the 2018 FINA World Swimming Championships in Hangzhou, China, as part of the men's freestyle relay team, one in 4 x 50 m and the other in the 4 x 100 m. 2014: At the 2014 FINA World Swimming Championships in Doha, Fesikov took home two medals.

2012: In 2012, at the London Olympic Games, Fesikov helped the Russian team take the podium with bronze for Russia, in the 4 x 100 m freestyle relay.

In the 2000s, his father, a renowned volleyball coach, received various job offers in Yaroslavl and Obninsk and moved his family there from Saint Petersburg.