Career
Rykun started his career for Football Club Metalurh Novomoskovsk in 1995. He played there until 1997 when he transferred to Dnipro in 1997. In 1998, he transferred to Football Club Metalurh Mariupol where he played until 2003.
He then transferred back to Dnipro.
He debuted in the Vyscha Liha on 17 March 1998 against Football Club Chernomorets Odessa. The best player of Ukrainian Premier League 2003-2004.