|Date of birth||November 25, 1958|
|Place of birth||Rostock, DDR|
|BFC Dynamo Berlin|
|–||Caracas Fútbol Club|
|–||1. FC Lübars|
|–||SV Preußen Berlin|
|* Senior club appearances and goals counted for the domestic league only and correct as of 15:55, 8 December 2008 (UTC).|
Olaf Seier, called "Leo" (due to his long lion-like hair), started his career with the Rostock based football club Polizei SV Rostock in 1970, where he achieved to become part of the first team and was able to play in the GDR Oberliga. Until his last season with the BFC in 1983 he played 35 games, in which he shot four goals and took part in 4 European Cup matches. With BFC Dynamo Berlin he won the GDR championship three times.
After the unsatisfying season of 1982/1983 (he didn't play a derby) he transferred to 1. FC Union Berlin, which was rather uncommon back then. Although his last team was the traditional arch-enemy of his new squad, he slowly became popular among his new fans. Already during his first days with Union he dominated the way the team played. This season was marked by bad luck for Union Berlin, and the team was relegated.
Just one year later the team was able to be part of the Oberliga again and placed at 12.
In 1994, as the new season was about to begin, he returned home and played for the Berlin club 1. FC Lübars.
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