Career
Prior to his coaching career, Riabovas played for Žalgiris Vilnius and 3 times was named as Best Football player of Lithuania. Riabovas was once the captain of the Lithuanian Soviet Socialist Republic football team during the Union of the Soviet Socialist Republics era. He was recently the manager of A Lyga side FBK Kaunas.
In November 2006 he was briefly attached to Scottish Premier League football club Heart of Midlothian Football Club, in an advisory capacity.
On 14 November 2006 it was speculated by the Scottish press that Riabovas would be the replacement for temporary head coach Eduard Malofeev, but this was later denied and did not take place, with Valdas Ivanauskas returning to take up the position, following a period of illness.