Koshechkin started his professional hockey career as the backup goaltender of
Lada Togliatti,
RSL. He took over as the number-one goaltender in the 2005–06 season, playing 41 out of 51 regular season games. With 3 goals against and 1 shutout in 3 games, he also actively contributed to the latest international achievement of his team, a 2005–06
Continental Cup win. He had spent three seasons with
Severstal Cherepovets before he moved to
Metallurg Magnitogorsk for a second stint. Although Koshechkin was drafted by the
Tampa Bay Lightning in the
2002 NHL entry draft, he has never left the KHL in his career. Following the conclusion of the
2022–23 season, Koshechkin announced his retirement from professional hockey after twenty-five professional seasons, on 27 March 2023, ending his career as the KHL's all-time record holder for goaltenders with 378 wins, 90 shutouts in 765 appearances. ==International play==