Graudyn represented his country at the World Championships in Athletics that same year and also raced at the 1988 Summer Olympics. He was a three-time national champion. His personal best for the 800 m was 1:44.10 minutes.
Graudyn set a personal best of 1:44.10 minutes at the Bislett Games in 1988 – this time placed him in the top ten in the world that year and he was third among Europeans, bettered only by British duo Steve Cram and Sebastian Coe.[8][9] However, he failed to match this form at the 1988 Seoul Olympics, being eliminated in the quarter-final round.[1] That proved to be the last major international event that he ran at. His wife, Yuliya Graudyn, would later win world and European medals for Russia.[10]