Stretovich started gymnastics at six years old when his mother took him to a gym club. He won gold at his first competition. He trains in Moscow, with the other members of the Russian team, and in Novosibirsk. His gymnastics idol is Hiroyuki Tomita.
In 2014, Stretovich sustained an injury at the start of the season. He competed in his first Worlds at the 2014 World Artistic Gymnastics Championships in Nanning, China. Stretovich competed only in pommel horse in Team event and together with teammates Team Russia finished 5th. In 2015, Stretovich was again member of the Russian men competing at the 2015 World Championships in Glasgow, together with teammates In 2016, Stretovich competed at the Russian Cup in July; where he won gold in parallel bars and high bar. Stretovich was initially named as an alternate for the Olympic Team but only days before the games started he was chosen to replace Nikita Ignatyev on the team, allegedly due to him looking better in training at the time. Stretovich then competed with the Russian Team at the 2016 Summer Olympics in Rio de Janeiro, he contributed scores of 14.755 in pommel horse, 15.100 in parallel bars, 14.766 in horizontal bar; helping the Russian men's team win the silver medal with a total of 271.453 points. In 2017, Stretovich suffered an arm injury and underwent treatment in Munich, Germany. In August 23-27, Stretovich returned to a national competition at the Russian Cup. In 2019, Stretovich competed at the European Championships in April; where he placed sixth on the high bar. In July he competed the Summer Universiade in Napoli winning silver in the all-around and on parallel bars aswell as bronze on horizontal bar and in the team competition. In September he competed at the Russian Cup where he won silver in the all-around competition behind Nikita Nagornyy and ahead of reigning All-Around World ChampionArtur Dalaloyan. He was selected to compete at the World Championshipsfor the first time since 2015 and placed 10th in the all-around in qualifying but did not progress to the finals because Nagornyy and Dalaloyan finished above him. In the team final Stretovich competed on Floor, Pommel Horse, Vault and High Bar to help Russia win team gold with a total of 261.726 points. Stretovich's score of 14.666 on High Bar during the team final was the highest of any gymnast in the final. Competing alongside Angelina Melnikova, Stretovich helped team Russia finished Second at the Brabant Trophy in October. In December at the Toyota International in Tokyo, Stretovich won Bronze on High Bar.
