The 6'3", 205-pound goaltender played in 27 games for Metallurg Magnitogorsk in the 2016-17 season, finishing with a 15-3-5 record, a 2.13 goals against average and a .936 save percentage, twice earning KHL Rookie of the Week honors. Samsonov also appeared in the 2017 World Junior Championship with Russia and recorded a 2.11 goals against average and a .930 save percentage in six games, leading Russia to a bronze medal and earning World Junior All Star Team honors. Samsonov appeared in 19 games for Metallurg Magnitogorsk in the 2015-16 season, recording a 2.04 goals against average and a .925 save percentage. Additionally, Samsonov played in six playoff games, helping Metallurg win the Gagarin Cup. Samsonov also won a silver medal at the World Junior Championship, appearing in two games for Russia with a 1.00 goals against average and a .956 save percentage. In 87 career KHL games, Samsonov posted a 33-16-9 record with a 2.20 goals against average, a .929 save percentage and seven shutouts.