His only Olympic appearance was at the 1988 Seoul Olympics in the 60 kg division against his former teammate Naim Süleymanoğlu. In the end Naim would put on the most dominating display of weightlifting of all time,Ledder, Glenn (2013). "Mathematics for the Life Sciences" p. 16. https://books.google.com/books?id=0VeRAAAAQBAJ&dq=Sinclair+Coefficients+naim+suleymanoglu&pg=PA16 but Stefan had a dominating performance of his own, winning the silver medal with a total of 312.5 kg, a full 25.0 kg above the bronze medalist Ye Huanming.
